{"version":2,"checkedAt":"2026-11-13","dailyStart":"2026-11-14","legacyQuestionCount":40,"sources":{"piano":{"name":"Yamaha · 88-key piano specifications","url":"https://usa.yamaha.com/products/musical_instruments/pianos/arius/ydp-s56/specs.html"},"guitar":{"name":"Yamaha · Acoustic guitar structure","url":"https://th.yamaha.com/en/musical-instruments/guitars-basses-amps/explore/musical-instrument-guide/acoustic-guitar/structure002.html"},"chess":{"name":"FIDE · Laws of Chess, Article 2","url":"https://handbook.fide.com/chapter/E012023"},"scrabble":{"name":"Hasbro · Classic US Scrabble instructions","url":"https://www.hasbro.com/common/documents/DAD2884B1C4311DDBD0B0800200C9A66/0606ACDBBC9D4B55BFD2DF956F61A723.pdf"},"scrabble-rules":{"name":"Hasbro · Scrabble rules and variants","url":"https://www.hasbro.com/common/documents/dad2884b1c4311ddbd0b0800200c9a66/857A6EB15056900B106050C7B9EC34B9.pdf"},"monopoly":{"name":"Hasbro · Monopoly 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Smaller keyboards and some extended-range pianos differ.","source":"piano"},{"id":"guitar-strings","group":"guitar","category":"Music","text":"How many strings does a standard acoustic guitar have?","answer":6,"unit":"strings","explanation":"The standard acoustic guitar has six strings. Twelve-string and other extended-range guitars are different versions.","source":"guitar"},{"id":"chess-squares","group":"chess","category":"Games","text":"How many small squares are on a chessboard?","answer":64,"unit":"squares","explanation":"Eight files × eight ranks = 64 squares, alternating light and dark.","source":"chess"},{"id":"chess-start","group":"chess","category":"Games","text":"How many chess pieces start on the board, counting both sides?","answer":32,"unit":"pieces","explanation":"Each player starts with 16 pieces: a king, a queen, two rooks, two bishops, two knights and eight pawns.","source":"chess"},{"id":"chess-pawns","group":"chess","category":"Games","text":"How many pawns start on a chessboard, counting both sides?","answer":16,"unit":"pawns","explanation":"White starts with eight pawns and Black starts with eight: 16 altogether.","source":"chess"},{"id":"scrabble-tiles","group":"scrabble","category":"Games","text":"How many tiles are in classic US English Scrabble, including blanks?","answer":100,"unit":"tiles","explanation":"The classic US English set has 100 tiles, including two blanks. Other languages and editions can use different tile counts.","source":"scrabble"},{"id":"scrabble-rack","group":"scrabble","category":"Games","text":"How many tiles do you normally draw for a full Scrabble rack?","answer":7,"unit":"tiles","explanation":"Classic Scrabble uses seven tiles per rack; the nine-tile game is a separate variant.","source":"scrabble-rules"},{"id":"scrabble-bonus","group":"scrabble","category":"Games","text":"How many bonus points do you earn for playing all seven Scrabble tiles at once?","answer":50,"unit":"points","explanation":"Playing all seven tiles in one turn earns a 50-point bingo bonus, added to the word's normal score.","source":"scrabble-rules"},{"id":"monopoly-houses","group":"monopoly","category":"Games","text":"How many house pieces come in a classic Monopoly set?","answer":32,"unit":"houses","explanation":"The classic Monopoly equipment list includes 32 houses and 12 hotels.","source":"monopoly"},{"id":"monopoly-hotels","group":"monopoly","category":"Games","text":"How many hotel pieces come in a classic Monopoly set?","answer":12,"unit":"hotels","explanation":"There are 12 hotels in the classic set. A hotel replaces the four houses on a property.","source":"monopoly"},{"id":"monopoly-build","group":"monopoly","category":"Games","text":"How many houses must each property in a Monopoly color group have before you can buy a hotel?","answer":4,"unit":"houses","explanation":"Each property in the complete color group needs four houses before you can buy a hotel for one of them.","source":"monopoly"},{"id":"football-players","group":"football","category":"Sport","text":"How many players can one association football team have on the field at once?","answer":11,"unit":"players","explanation":"The maximum is 11 players per team, including the goalkeeper. Substitutes are not included.","source":"football-team"},{"id":"football-half","group":"football","category":"Sport","text":"How many minutes are scheduled for one normal adult football half, before added time?","answer":45,"unit":"minutes","explanation":"A normal adult association football match has two 45-minute halves. Added time is separate.","source":"football-time"},{"id":"football-match","group":"football","category":"Sport","text":"How many minutes of play are scheduled for a normal football match, excluding added and extra time?","answer":90,"unit":"minutes","explanation":"Two 45-minute halves make 90 minutes. This excludes the half-time break, added time and extra time.","source":"football-time"},{"id":"basketball-team","group":"basketball","category":"Sport","text":"How many players from one team are on court in standard five-on-five basketball?","answer":5,"unit":"players","explanation":"Standard basketball has five players per team on court. A roster and the separate 3×3 format have different counts.","source":"basketball"},{"id":"basketball-quarter","group":"basketball","category":"Sport","text":"How many minutes are in a FIBA basketball quarter?","answer":10,"unit":"minutes","explanation":"FIBA games use four 10-minute quarters. NBA quarters are longer, so the rule set matters.","source":"basketball"},{"id":"basketball-time","group":"basketball","category":"Sport","text":"How many minutes of regulation play are in a FIBA basketball game?","answer":40,"unit":"minutes","explanation":"Four 10-minute quarters total 40 minutes of regulation play, excluding breaks and any overtime.","source":"basketball"},{"id":"adult-teeth","group":"teeth","category":"The body","text":"How many teeth are in a full adult set, including all wisdom teeth?","answer":32,"unit":"teeth","explanation":"A full adult set has 32 permanent teeth including the four wisdom teeth. Some people never develop all four or have teeth removed.","source":"teeth"},{"id":"primary-teeth","group":"teeth","category":"The body","text":"How many teeth are in a complete set of baby teeth?","answer":20,"unit":"teeth","explanation":"The complete primary, or baby, set contains 20 teeth. They erupt and fall out at different times.","source":"teeth"},{"id":"human-chromosomes","group":"chromosomes","category":"The body","text":"How many chromosomes are normally in a human body cell's nucleus?","answer":46,"unit":"chromosomes","explanation":"A typical nucleated body cell contains 23 pairs, or 46 chromosomes. Egg and sperm cells have 23; mature red blood cells have no nucleus.","source":"chromosomes"},{"id":"canada-provinces","group":"canada","category":"The world","text":"How many provinces does Canada have, excluding its territories?","answer":10,"unit":"provinces","explanation":"Canada has ten provinces and three territories. Territories are not counted as provinces.","source":"canada"},{"id":"canada-territories","group":"canada","category":"The world","text":"How many territories does Canada have?","answer":3,"unit":"territories","explanation":"Canada's three territories are Yukon, Northwest Territories and Nunavut.","source":"canada"},{"id":"australia-states","group":"australia","category":"The world","text":"How many states does Australia have, excluding its territories?","answer":6,"unit":"states","explanation":"Australia has six states. The Australian Capital Territory and Northern Territory are not states.","source":"australia"},{"id":"us-flag-stars","group":"us-flag","category":"The world","text":"How many stars are on the current United States flag?","answer":50,"unit":"stars","explanation":"The 50 stars represent the 50 states. The District of Columbia and US territories are not states.","source":"flag"},{"id":"us-flag-stripes","group":"us-flag","category":"The world","text":"How many stripes are on the United States flag?","answer":13,"unit":"stripes","explanation":"The 13 alternating red and white stripes represent the original 13 colonies.","source":"flag"},{"id":"mercury-year","group":"mercury","category":"Space","text":"How many Earth days does Mercury take to orbit the Sun, rounded to the nearest day?","answer":88,"unit":"Earth days","explanation":"Mercury's orbital period is about 87.97 Earth days, which rounds to 88. This is its year, not its day.","source":"mercury"},{"id":"mercury-spin","group":"mercury","category":"Space","text":"How many Earth days does Mercury take to rotate once relative to the stars, rounded to the nearest day?","answer":59,"unit":"Earth days","explanation":"Mercury takes about 58.6 Earth days for one rotation relative to the stars. Its noon-to-noon solar day is much longer.","source":"mercury"},{"id":"mercury-moons","group":"mercury","category":"Space","text":"How many natural moons does Mercury have?","answer":0,"unit":"moons","explanation":"Mercury has no natural moons. Zero is a valid answer on this number line.","source":"mercury-moons"},{"id":"moon-orbit","group":"moon","category":"Space","text":"How many Earth days does the Moon take to orbit Earth relative to the stars, rounded to the nearest day?","answer":27,"unit":"Earth days","explanation":"The sidereal orbital period is about 27.32 days. The full cycle of lunar phases is longer because Earth is also orbiting the Sun.","source":"moon"},{"id":"moon-phases","group":"moon","category":"Space","text":"How many days is a full cycle from one new moon to the next, rounded to the nearest day?","answer":30,"unit":"days","explanation":"A lunar phase cycle averages about 29.53 days, commonly given as 29.5. Rounded to the nearest whole day, it is 30.","source":"lunar-cycle"},{"id":"ocean-cover","group":"earth","category":"Our planet","text":"About what percentage of Earth's surface is covered by oceans?","answer":71,"unit":"%","explanation":"Oceans cover about 71% of Earth's surface area. This measures surface coverage, not the share of Earth's total water.","source":"oceans"},{"id":"earth-tilt","group":"earth","category":"Our planet","text":"How many degrees is Earth's axial tilt from the perpendicular to its orbital plane, rounded to the nearest degree?","answer":23,"unit":"degrees","explanation":"Earth's obliquity is about 23.44°, which rounds to 23°. The axis is tilted from the line perpendicular to the orbital plane.","source":"earth"},{"id":"gold-protons","group":"elements","category":"Science","text":"How many protons are in the nucleus of a gold atom?","answer":79,"unit":"protons","explanation":"Gold (Au) has atomic number 79. Atomic number counts protons, not neutrons or atomic mass.","source":"elements"},{"id":"silver-protons","group":"elements","category":"Science","text":"How many protons are in the nucleus of a silver atom?","answer":47,"unit":"protons","explanation":"Silver (Ag) has atomic number 47, so each silver nucleus contains 47 protons.","source":"elements"},{"id":"iron-protons","group":"elements","category":"Science","text":"How many protons are in the nucleus of an iron atom?","answer":26,"unit":"protons","explanation":"Iron (Fe) has atomic number 26. Isotopes of iron differ in neutron count, not proton count.","source":"elements"},{"id":"copper-protons","group":"elements","category":"Science","text":"How many protons are in the nucleus of a copper atom?","answer":29,"unit":"protons","explanation":"Copper (Cu) has atomic number 29, meaning 29 protons in every copper nucleus.","source":"elements"},{"id":"xenon-protons","group":"elements","category":"Science","text":"How many protons are in the nucleus of a xenon atom?","answer":54,"unit":"protons","explanation":"Xenon (Xe) is a noble gas with atomic number 54. That number is its proton count.","source":"elements"},{"id":"uranium-protons","group":"elements","category":"Science","text":"How many protons are in the nucleus of a uranium atom?","answer":92,"unit":"protons","explanation":"Uranium (U) has atomic number 92. Numbers such as 235 and 238 describe isotope mass numbers instead.","source":"elements"},{"id":"lead-protons","group":"elements","category":"Science","text":"How many protons are in the nucleus of a lead atom?","answer":82,"unit":"protons","explanation":"Lead (Pb) has atomic number 82. Its chemical symbol comes from the Latin plumbum.","source":"elements"},{"id":"oxygen-protons","group":"elements","category":"Science","text":"How many protons are in the nucleus of an oxygen atom?","answer":8,"unit":"protons","explanation":"Oxygen (O) has atomic number 8. A neutral oxygen atom also has eight electrons.","source":"elements"},{"id":"jupiter-rotation","text":"How many hours does Jupiter take to rotate once, rounded to the nearest hour?","answer":10,"unit":"hours","explanation":"NASA gives about 9.9 hours: Jupiter spins in roughly ten hours.","category":"Space","group":"jupiter","source":"nasa-planets"},{"id":"jupiter-tilt","text":"How many degrees is Jupiter's axial tilt, rounded to the nearest degree?","answer":3,"unit":"degrees","explanation":"Its obliquity is about 3.1°, much smaller than Earth's tilt.","category":"Space","group":"jupiter","source":"nasa-planets"},{"id":"jupiter-gravity","text":"What is Jupiter's equatorial gravity in metres per second squared, rounded to the nearest whole number?","answer":23,"unit":"m/s²","explanation":"NASA's comparison table lists 23.1 m/s² at the one-bar level.","category":"Space","group":"jupiter","source":"nasa-planets"},{"id":"jupiter-year","text":"How many Earth years does Jupiter take to orbit the Sun, rounded to the nearest year?","answer":12,"unit":"Earth years","explanation":"4,331 Earth days divided by 365.25 is about 11.86 years.","category":"Space","group":"jupiter","source":"nasa-planets"},{"id":"saturn-rotation","text":"How many hours does Saturn take to rotate once, rounded to the nearest hour?","answer":11,"unit":"hours","explanation":"The fact sheet gives about 10.7 hours, which rounds to 11.","category":"Space","group":"saturn","source":"nasa-planets"},{"id":"saturn-tilt","text":"How many degrees is Saturn's axial tilt, rounded to the nearest degree?","answer":27,"unit":"degrees","explanation":"Saturn's obliquity is about 26.7°, which rounds to 27.","category":"Space","group":"saturn","source":"nasa-planets"},{"id":"saturn-year","text":"How many Earth years does Saturn take to orbit the Sun, rounded to the nearest year?","answer":29,"unit":"Earth years","explanation":"10,747 Earth days is about 29.42 Earth years.","category":"Space","group":"saturn","source":"nasa-planets"},{"id":"uranus-rotation","text":"How many hours does Uranus take to rotate once, ignoring direction and rounding to the nearest hour?","answer":17,"unit":"hours","explanation":"Its rotation takes about 17.2 hours; the negative sign in tables means retrograde rotation.","category":"Space","group":"uranus","source":"nasa-planets"},{"id":"uranus-tilt","text":"How many degrees is Uranus's axial tilt, rounded to the nearest degree?","answer":98,"unit":"degrees","explanation":"Its obliquity is about 97.8°, so it rotates almost on its side.","category":"Space","group":"uranus","source":"nasa-planets"},{"id":"uranus-year","text":"How many Earth years does Uranus take to orbit the Sun, rounded to the nearest year?","answer":84,"unit":"Earth years","explanation":"30,589 days is about 83.75 Earth years.","category":"Space","group":"uranus","source":"nasa-planets"},{"id":"neptune-rotation","text":"How many hours does Neptune take to rotate once, rounded to the nearest hour?","answer":16,"unit":"hours","explanation":"NASA's comparison table gives about 16.1 hours.","category":"Space","group":"neptune","source":"nasa-planets"},{"id":"neptune-tilt","text":"How many degrees is Neptune's axial tilt, rounded to the nearest degree?","answer":28,"unit":"degrees","explanation":"Its obliquity is about 28.3°, which rounds to 28.","category":"Space","group":"neptune","source":"nasa-planets"},{"id":"mars-day","text":"How many Earth hours are in a solar day on Mars, rounded to the nearest hour?","answer":25,"unit":"hours","explanation":"A Martian solar day, or sol, is about 24.7 Earth hours.","category":"Space","group":"mars","source":"nasa-planets"},{"id":"mars-tilt","text":"How many degrees is Mars's axial tilt, rounded to the nearest degree?","answer":25,"unit":"degrees","explanation":"Mars has an axial tilt of about 25.2°.","category":"Space","group":"mars","source":"nasa-planets"},{"id":"mars-gravity","text":"What is Mars's surface gravity in metres per second squared, rounded to the nearest whole number?","answer":4,"unit":"m/s²","explanation":"Mars's surface gravity is about 3.7 m/s².","category":"Space","group":"mars","source":"nasa-planets"},{"id":"venus-gravity","text":"What is Venus's surface gravity in metres per second squared, rounded to the nearest whole number?","answer":9,"unit":"m/s²","explanation":"NASA gives about 8.9 m/s², close to Earth's surface gravity.","category":"Space","group":"venus","source":"nasa-planets"},{"id":"venus-pressure","text":"About how many bars is the atmospheric pressure at Venus's surface?","answer":92,"unit":"bars","explanation":"NASA lists about 92 bars, compared with about one bar on Earth.","category":"Space","group":"venus","source":"nasa-planets"},{"id":"earth-gravity","text":"What is Earth's surface gravity in metres per second squared, rounded to the nearest whole number?","answer":10,"unit":"m/s²","explanation":"The table gives about 9.8 m/s², which rounds to 10.","category":"Space","group":"earth","source":"nasa-planets"},{"id":"earth-orbital-speed","text":"How fast does Earth orbit the Sun in kilometres per second, rounded to the nearest whole number?","answer":30,"unit":"km/s","explanation":"Earth's mean orbital speed is about 29.8 km/s.","category":"Space","group":"earth","source":"nasa-planets"},{"id":"moon-gravity","text":"What is the Moon's surface gravity in metres per second squared, rounded to the nearest whole number?","answer":2,"unit":"m/s²","explanation":"Lunar surface gravity is about 1.6 m/s², which rounds to 2.","category":"Space","group":"moon","source":"nasa-planets"},{"id":"mercury-distance","text":"What is Mercury's mean distance from the Sun in millions of kilometres, rounded to the nearest whole number?","answer":58,"unit":"million km","explanation":"NASA lists 57.9 million kilometres.","category":"Space","group":"mercury","source":"nasa-planets"},{"id":"mercury-orbital-speed","text":"How fast does Mercury orbit the Sun in kilometres per second, rounded to the nearest whole number?","answer":47,"unit":"km/s","explanation":"Its mean orbital velocity is about 47.4 km/s.","category":"Space","group":"mercury","source":"nasa-planets"},{"id":"solar-planets","text":"How many planets are in our Solar System, excluding dwarf planets?","answer":8,"unit":"planets","explanation":"Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune are the eight planets.","category":"Space","group":"solar-system","source":"nasa-planets"},{"id":"rocky-planets","text":"How many terrestrial, rocky planets are in our Solar System?","answer":4,"unit":"planets","explanation":"Mercury, Venus, Earth and Mars are the four terrestrial planets.","category":"Space","group":"solar-system","source":"nasa-planets"},{"id":"giant-planets","text":"How many giant planets are in our Solar System, counting gas and ice giants?","answer":4,"unit":"planets","explanation":"Jupiter and Saturn are gas giants; Uranus and Neptune are ice giants.","category":"Space","group":"solar-system","source":"nasa-planets"},{"id":"skull-bones","text":"How many bones form an adult human skull, excluding the ear ossicles and hyoid?","answer":22,"unit":"bones","explanation":"OpenStax counts eight cranial bones and fourteen facial bones.","category":"The body","group":"skull","source":"skull"},{"id":"cranial-bones","text":"How many bones form the human brain case, excluding the facial bones?","answer":8,"unit":"bones","explanation":"The eight cranial bones protect the brain.","category":"The body","group":"skull","source":"skull"},{"id":"facial-bones","text":"How many facial bones are in the standard adult human skull?","answer":14,"unit":"bones","explanation":"There are fourteen facial bones; cranial bones are counted separately.","category":"The body","group":"skull","source":"skull"},{"id":"immobile-skull-bones","text":"Of the 22 standard adult skull bones, how many are normally immobile?","answer":21,"unit":"bones","explanation":"The mandible is the only movable bone in this 22-bone count.","category":"The body","group":"skull","source":"skull"},{"id":"cervical-vertebrae","text":"How many cervical vertebrae are normally in a human neck?","answer":7,"unit":"vertebrae","explanation":"The cervical vertebrae are numbered C1 through C7.","category":"The body","group":"spine","source":"spine"},{"id":"thoracic-vertebrae","text":"How many thoracic vertebrae are normally in the human spine?","answer":12,"unit":"vertebrae","explanation":"The thoracic vertebrae are numbered T1 through T12.","category":"The body","group":"spine","source":"spine"},{"id":"lumbar-vertebrae","text":"How many lumbar vertebrae are normally in the human lower back?","answer":5,"unit":"vertebrae","explanation":"The lumbar vertebrae are numbered L1 through L5.","category":"The body","group":"spine","source":"spine"},{"id":"separate-vertebrae","text":"How many separate vertebrae are normally above an adult's sacrum?","answer":24,"unit":"vertebrae","explanation":"Seven cervical plus twelve thoracic plus five lumbar vertebrae total 24.","category":"The body","group":"spine","source":"spine"},{"id":"sacral-fusion","text":"How many vertebrae normally fuse to form the adult sacrum?","answer":5,"unit":"vertebrae","explanation":"Five sacral vertebrae fuse into a single sacrum.","category":"The body","group":"spine","source":"spine"},{"id":"adult-spine-bones","text":"How many bones form the standard fully fused adult vertebral column?","answer":26,"unit":"bones","explanation":"24 separate vertebrae, one sacrum and one coccyx total 26 bones.","category":"The body","group":"spine","source":"spine"},{"id":"giraffe-neck","text":"How many neck vertebrae does a giraffe normally have?","answer":7,"unit":"vertebrae","explanation":"Giraffes have seven cervical vertebrae, like humans; the bones are much longer.","category":"Animals","group":"giraffe","source":"spine"},{"id":"upper-limb-bones","text":"How many bones are in one human upper limb, excluding the shoulder girdle?","answer":30,"unit":"bones","explanation":"One humerus, two forearm bones and 27 wrist-and-hand bones total 30.","category":"The body","group":"hand","source":"upper-limb"},{"id":"carpal-bones","text":"How many carpal bones are in one human wrist?","answer":8,"unit":"bones","explanation":"Eight carpal bones are arranged in two rows of four.","category":"The body","group":"hand","source":"upper-limb"},{"id":"metacarpal-bones","text":"How many metacarpal bones form the palm of one hand?","answer":5,"unit":"bones","explanation":"Each of the five digits has a corresponding metacarpal.","category":"The body","group":"hand","source":"upper-limb"},{"id":"hand-phalanges","text":"How many phalanges are in the fingers and thumb of one human hand?","answer":14,"unit":"bones","explanation":"The thumb has two; each of the four other fingers has three.","category":"The body","group":"hand","source":"upper-limb"},{"id":"thumb-phalanges","text":"How many phalanges does a human thumb normally have?","answer":2,"unit":"bones","explanation":"The thumb has a proximal and a distal phalanx, with no middle phalanx.","category":"The body","group":"hand","source":"upper-limb"},{"id":"forearm-bones","text":"How many bones are in one human forearm?","answer":2,"unit":"bones","explanation":"The radius and ulna run between the elbow and wrist.","category":"The body","group":"hand","source":"upper-limb"},{"id":"hand-bones","text":"How many bones are in one human hand, including the wrist?","answer":27,"unit":"bones","explanation":"Eight carpals, five metacarpals and fourteen phalanges total 27.","category":"The body","group":"hand","source":"upper-limb"},{"id":"lower-limb-bones","text":"How many bones are in one human lower limb, excluding the pelvic girdle?","answer":30,"unit":"bones","explanation":"The thigh, leg and foot together contain 30 bones.","category":"The body","group":"foot","source":"lower-limb"},{"id":"foot-bones","text":"How many bones are normally in one adult human foot?","answer":26,"unit":"bones","explanation":"Seven tarsals, five metatarsals and fourteen phalanges total 26.","category":"The body","group":"foot","source":"lower-limb"},{"id":"tarsal-bones","text":"How many tarsal bones are in one human foot?","answer":7,"unit":"bones","explanation":"The seven include the talus and calcaneus, or heel bone.","category":"The body","group":"foot","source":"lower-limb"},{"id":"metatarsal-bones","text":"How many metatarsal bones are in one human foot?","answer":5,"unit":"bones","explanation":"Five metatarsals connect the tarsals to the toes.","category":"The body","group":"foot","source":"lower-limb"},{"id":"toe-phalanges","text":"How many phalanges are in the toes of one human foot?","answer":14,"unit":"bones","explanation":"The big toe has two and the other four toes have three each.","category":"The body","group":"foot","source":"lower-limb"},{"id":"big-toe-phalanges","text":"How many phalanges does a human big toe normally have?","answer":2,"unit":"bones","explanation":"The big toe has two phalanges, rather than three.","category":"The body","group":"foot","source":"lower-limb"},{"id":"lower-leg-bones","text":"How many bones run between a human knee and ankle?","answer":2,"unit":"bones","explanation":"The tibia and fibula form the lower leg.","category":"The body","group":"foot","source":"lower-limb"},{"id":"cube-faces","text":"How many faces does a cube have?","answer":6,"unit":"faces","explanation":"A cube has six square faces.","category":"Shapes & numbers","group":"cube","source":"platonic"},{"id":"cube-vertices","text":"How many vertices, or corners, does a cube have?","answer":8,"unit":"vertices","explanation":"The eight vertices join the twelve edges.","category":"Shapes & numbers","group":"cube","source":"platonic"},{"id":"cube-edges","text":"How many edges does a cube have?","answer":12,"unit":"edges","explanation":"Each of six faces has four edges, but each edge is shared: 6 × 4 ÷ 2 = 12.","category":"Shapes & numbers","group":"cube","source":"platonic"},{"id":"tetrahedron-faces","text":"How many faces does a tetrahedron have?","answer":4,"unit":"faces","explanation":"A tetrahedron has four triangular faces.","category":"Shapes & numbers","group":"tetrahedron","source":"platonic"},{"id":"tetrahedron-edges","text":"How many edges does a tetrahedron have?","answer":6,"unit":"edges","explanation":"Its four triangular faces share six edges.","category":"Shapes & numbers","group":"tetrahedron","source":"platonic"},{"id":"octahedron-faces","text":"How many faces does a regular octahedron have?","answer":8,"unit":"faces","explanation":"It has eight equilateral-triangle faces.","category":"Shapes & numbers","group":"polyhedra","source":"platonic"},{"id":"dodecahedron-faces","text":"How many faces does a regular dodecahedron have?","answer":12,"unit":"faces","explanation":"It has twelve regular-pentagon faces.","category":"Shapes & numbers","group":"polyhedra","source":"platonic"},{"id":"icosahedron-faces","text":"How many faces does a regular icosahedron have?","answer":20,"unit":"faces","explanation":"It has twenty equilateral-triangle faces.","category":"Shapes & numbers","group":"polyhedra","source":"platonic"},{"id":"platonic-types","text":"How many different Platonic solids exist in three dimensions?","answer":5,"unit":"solids","explanation":"They are the tetrahedron, cube, octahedron, dodecahedron and icosahedron.","category":"Shapes & numbers","group":"polyhedra","source":"platonic"},{"id":"football-panels","text":"How many panels are in the classic black-and-white truncated-icosahedron football design?","answer":32,"unit":"panels","explanation":"Twelve pentagons and twenty hexagons total 32; modern ball designs vary.","category":"Shapes & numbers","group":"football-panels","source":"football-solid"},{"id":"football-pentagons","text":"How many pentagonal panels are in the classic 32-panel football design?","answer":12,"unit":"panels","explanation":"The traditional design uses twelve pentagons, usually black.","category":"Shapes & numbers","group":"football-panels","source":"football-solid"},{"id":"football-hexagons","text":"How many hexagonal panels are in the classic 32-panel football design?","answer":20,"unit":"panels","explanation":"The traditional design uses twenty hexagons, usually white.","category":"Shapes & numbers","group":"football-panels","source":"football-solid"},{"id":"football-solid-vertices","text":"How many vertices does a truncated icosahedron, the classic football shape, have?","answer":60,"unit":"vertices","explanation":"Three panels meet at each of its sixty vertices.","category":"Shapes & numbers","group":"football-panels","source":"football-solid"},{"id":"football-solid-edges","text":"How many edges does a truncated icosahedron have?","answer":90,"unit":"edges","explanation":"The panel boundaries give (12 × 5 + 20 × 6) ÷ 2 = 90 edges.","category":"Shapes & numbers","group":"football-panels","source":"football-solid"},{"id":"die-opposite","text":"What is the sum of two opposite faces on a standard six-sided die?","answer":7,"unit":"spots","explanation":"Opposite pairs are 1–6, 2–5 and 3–4.","category":"Shapes & numbers","group":"dice","source":"dice"},{"id":"die-spots","text":"How many spots are on all six faces of a standard die combined?","answer":21,"unit":"spots","explanation":"1 + 2 + 3 + 4 + 5 + 6 = 21.","category":"Shapes & numbers","group":"dice","source":"dice"},{"id":"dice-outcomes","text":"How many ordered outcomes are possible when rolling two six-sided dice?","answer":36,"unit":"outcomes","explanation":"Six outcomes on the first die times six on the second gives 36.","category":"Shapes & numbers","group":"dice","source":"dice"},{"id":"dice-seven-ways","text":"How many ordered outcomes total seven when rolling two six-sided dice?","answer":6,"unit":"outcomes","explanation":"The pairs are 1–6, 2–5, 3–4, 4–3, 5–2 and 6–1.","category":"Shapes & numbers","group":"dice","source":"dice"},{"id":"dice-doubles-percent","text":"What is the percentage chance of doubles on two fair six-sided dice, rounded to the nearest percent?","answer":17,"unit":"%","explanation":"Six matching pairs out of 36 outcomes is 16.67%, rounded to 17%.","category":"Shapes & numbers","group":"dice","source":"dice"},{"id":"dice-six-percent","text":"What is the chance of at least one six on two fair six-sided dice, rounded to the nearest percent?","answer":31,"unit":"%","explanation":"The chance is 1 − (5/6)² = 11/36, about 30.56%.","category":"Shapes & numbers","group":"dice","source":"dice"},{"id":"triangle-angle","text":"How many degrees are in each interior angle of an equilateral triangle?","answer":60,"unit":"degrees","explanation":"Its three equal angles divide the 180° total equally.","category":"Shapes & numbers","group":"angles","source":"polygons"},{"id":"square-angle","text":"How many degrees are in each interior angle of a square?","answer":90,"unit":"degrees","explanation":"Each square corner is a right angle.","category":"Shapes & numbers","group":"angles","source":"polygons"},{"id":"pentagon-exterior","text":"How many degrees are in each exterior turning angle of a regular pentagon?","answer":72,"unit":"degrees","explanation":"The five equal turns complete a full 360°: 360 ÷ 5 = 72.","category":"Shapes & numbers","group":"angles","source":"polygons"},{"id":"hexagon-exterior","text":"How many degrees are in each exterior turning angle of a regular hexagon?","answer":60,"unit":"degrees","explanation":"The six equal turns are 360 ÷ 6 = 60°.","category":"Shapes & numbers","group":"angles","source":"polygons"},{"id":"octagon-exterior","text":"How many degrees are in each exterior turning angle of a regular octagon?","answer":45,"unit":"degrees","explanation":"The eight equal turns are 360 ÷ 8 = 45°.","category":"Shapes & numbers","group":"angles","source":"polygons"},{"id":"nba-quarter","text":"How many minutes are in a regulation NBA quarter?","answer":12,"unit":"minutes","explanation":"NBA quarters last twelve minutes; FIBA quarters last ten.","category":"Sport","group":"basketball","source":"nba-timing"},{"id":"nba-regulation","text":"How many minutes of regulation play are in an NBA game?","answer":48,"unit":"minutes","explanation":"Four twelve-minute quarters total 48 minutes.","category":"Sport","group":"basketball","source":"nba-timing"},{"id":"nba-overtime","text":"How many minutes are in one NBA overtime period?","answer":5,"unit":"minutes","explanation":"Each overtime period lasts five minutes.","category":"Sport","group":"basketball","source":"nba-timing"},{"id":"nba-three-pointer","text":"How many points is an NBA basket worth when the shooter is outside the three-point line?","answer":3,"unit":"points","explanation":"A legal field goal from outside the line is worth three points.","category":"Sport","group":"basketball","source":"nba-timing"},{"id":"nba-two-pointer","text":"How many points is an ordinary NBA field goal worth from inside the three-point line?","answer":2,"unit":"points","explanation":"A legal field goal from on or inside the line is worth two points.","category":"Sport","group":"basketball","source":"nba-timing"},{"id":"nba-free-throw","text":"How many points is a successful NBA free throw worth?","answer":1,"unit":"points","explanation":"A successful free throw scores one point.","category":"Sport","group":"basketball","source":"nba-timing"},{"id":"nba-timeouts","text":"How many charged timeouts is each NBA team entitled to during regulation?","answer":7,"unit":"timeouts","explanation":"NBA Rule 5 gives seven charged timeouts, subject to period limits.","category":"Sport","group":"basketball","source":"nba-timing"},{"id":"nba-overtime-timeouts","text":"How many team timeouts are allowed for each team in one NBA overtime period?","answer":2,"unit":"timeouts","explanation":"Each team is allowed two team timeouts in each overtime.","category":"Sport","group":"basketball","source":"nba-timing"},{"id":"nba-halftime","text":"How many minutes does the NBA rulebook permit between halves?","answer":15,"unit":"minutes","explanation":"Rule 5 permits fifteen minutes between halves.","category":"Sport","group":"basketball","source":"nba-timing"},{"id":"nba-shot-clock","text":"How many seconds does a full NBA shot clock start with?","answer":24,"unit":"seconds","explanation":"A full shot clock starts at 24; some resets are to fourteen.","category":"Sport","group":"basketball","source":"nba-clock"},{"id":"football-minimum","text":"What is the minimum number of players a football team needs for a match to start?","answer":7,"unit":"players","explanation":"IFAB Law 3 says a match cannot start with fewer than seven on either team.","category":"Sport","group":"football","source":"football-team"},{"id":"football-halftime","text":"What is the maximum normal half-time interval in adult association football, in minutes?","answer":15,"unit":"minutes","explanation":"IFAB Law 7 sets a half-time interval not exceeding fifteen minutes.","category":"Sport","group":"football","source":"football-time"},{"id":"football-shootout","text":"How many kicks is each team scheduled to take in the initial round of a football penalty shoot-out?","answer":5,"unit":"kicks","explanation":"Five per side; it can end early or continue in sudden death if tied.","category":"Sport","group":"football","source":"football-penalties"},{"id":"snooker-reds","text":"How many red balls are used at the start of a standard snooker frame?","answer":15,"unit":"balls","explanation":"Standard snooker starts with fifteen reds.","category":"Sport","group":"snooker","source":"snooker"},{"id":"snooker-total","text":"How many balls start a standard snooker frame, including the cue ball?","answer":22,"unit":"balls","explanation":"Fifteen reds, six colours and one white cue ball total 22.","category":"Sport","group":"snooker","source":"snooker"},{"id":"snooker-colours","text":"How many non-red coloured object balls are used in standard snooker?","answer":6,"unit":"balls","explanation":"Yellow, green, brown, blue, pink and black are the six colours.","category":"Sport","group":"snooker","source":"snooker"},{"id":"snooker-black","text":"How many points is the black ball worth in snooker?","answer":7,"unit":"points","explanation":"The black has the highest normal colour value: seven points.","category":"Sport","group":"snooker","source":"snooker"},{"id":"snooker-pink","text":"How many points is the pink ball worth in snooker?","answer":6,"unit":"points","explanation":"The pink is worth six points.","category":"Sport","group":"snooker","source":"snooker"},{"id":"snooker-blue","text":"How many points is the blue ball worth in snooker?","answer":5,"unit":"points","explanation":"The blue is worth five points.","category":"Sport","group":"snooker","source":"snooker"},{"id":"snooker-brown","text":"How many points is the brown ball worth in snooker?","answer":4,"unit":"points","explanation":"The brown is worth four points.","category":"Sport","group":"snooker","source":"snooker"},{"id":"snooker-green","text":"How many points is the green ball worth in snooker?","answer":3,"unit":"points","explanation":"The green is worth three points.","category":"Sport","group":"snooker","source":"snooker"},{"id":"snooker-yellow","text":"How many points is the yellow ball worth in snooker?","answer":2,"unit":"points","explanation":"The yellow is worth two points.","category":"Sport","group":"snooker","source":"snooker"},{"id":"decathlon-events","text":"How many events make up a track-and-field decathlon?","answer":10,"unit":"events","explanation":"The ten events are contested over two days.","category":"Sport","group":"combined-events","source":"decathlon"},{"id":"heptathlon-events","text":"How many events make up an outdoor track-and-field heptathlon?","answer":7,"unit":"events","explanation":"The seven disciplines span running, jumping and throwing.","category":"Sport","group":"combined-events","source":"heptathlon"},{"id":"olympic-ring-count","text":"How many interlaced rings form the Olympic symbol?","answer":5,"unit":"rings","explanation":"The Olympic Charter specifies five interlaced rings.","category":"Sport","group":"olympics","source":"olympic-rings"},{"id":"swiss-cantons","text":"How many cantons make up Switzerland?","answer":26,"unit":"cantons","explanation":"Switzerland has 26 cantons in its federal system.","category":"The world","group":"switzerland","source":"switzerland"},{"id":"swiss-council","text":"How many members form Switzerland's Federal Council?","answer":7,"unit":"members","explanation":"The federal government is a seven-member collegial body.","category":"The world","group":"switzerland","source":"switzerland"},{"id":"swiss-upper-house","text":"How many seats are in Switzerland's Council of States?","answer":46,"unit":"seats","explanation":"The Council of States is the 46-member upper chamber.","category":"The world","group":"switzerland","source":"switzerland"},{"id":"swiss-levels","text":"How many political levels share power in Switzerland's federal system?","answer":3,"unit":"levels","explanation":"The Confederation, cantons and communes are the three levels.","category":"The world","group":"switzerland","source":"switzerland"},{"id":"swiss-chambers","text":"How many chambers are in the Swiss Federal Assembly?","answer":2,"unit":"chambers","explanation":"It consists of the National Council and the Council of States.","category":"The world","group":"switzerland","source":"switzerland"},{"id":"german-states","text":"How many federal states, or Länder, make up Germany?","answer":16,"unit":"states","explanation":"The Federal Republic is made up of sixteen Länder.","category":"The world","group":"germany","source":"germany"},{"id":"german-city-states","text":"How many of Germany's federal states are city-states?","answer":3,"unit":"states","explanation":"Berlin, Hamburg and Bremen are the three city-states.","category":"The world","group":"germany","source":"germany"},{"id":"japan-prefectures","text":"How many prefectures does Japan have?","answer":47,"unit":"prefectures","explanation":"JapanGov lists forty-seven prefectures.","category":"The world","group":"japan","source":"japan"},{"id":"south-africa-provinces","text":"How many provinces does South Africa have?","answer":9,"unit":"provinces","explanation":"South Africa is divided into nine provinces.","category":"The world","group":"south-africa","source":"south-africa"},{"id":"eu-members","text":"How many countries were members of the European Union in November 2026?","answer":27,"unit":"countries","explanation":"The EU has 27 Member States in the referenced period; the UK left in 2020.","category":"The world","group":"eu","source":"eu"},{"id":"eu-languages","text":"How many official languages does the European Union have in the cited EU & ME guide?","answer":24,"unit":"languages","explanation":"The guide lists twenty-four official languages.","category":"The world","group":"eu","source":"eu"},{"id":"eu-founders","text":"How many countries founded the European Economic Community in 1957?","answer":6,"unit":"countries","explanation":"Belgium, France, Germany, Italy, Luxembourg and the Netherlands were the six founders.","category":"The world","group":"eu","source":"eu"},{"id":"eu-outermost","text":"How many outermost regions does the EU & ME guide list?","answer":9,"unit":"regions","explanation":"Six belong to France, two to Portugal and one to Spain.","category":"The world","group":"eu","source":"eu"},{"id":"nato-members","text":"How many NATO member countries were there in November 2026?","answer":32,"unit":"countries","explanation":"Sweden's 2024 accession brought NATO to 32 members in the cited period.","category":"The world","group":"nato","source":"nato"},{"id":"uk-countries","text":"How many constituent countries make up the United Kingdom?","answer":4,"unit":"countries","explanation":"England, Scotland, Wales and Northern Ireland form the UK.","category":"The world","group":"uk","source":"uk"},{"id":"teaspoon-ml","text":"About how many millilitres is one US teaspoon in NIST's cooking conversion table?","answer":5,"unit":"mL","explanation":"The table uses a rounded kitchen equivalent of 5 mL.","category":"In the kitchen","group":"cooking-volume","source":"kitchen"},{"id":"tablespoon-ml","text":"About how many millilitres is one US tablespoon in NIST's cooking conversion table?","answer":15,"unit":"mL","explanation":"The rounded cooking equivalent is 15 mL; Australian tablespoons differ.","category":"In the kitchen","group":"cooking-volume","source":"kitchen"},{"id":"fluid-ounce-ml","text":"About how many millilitres is one US fluid ounce in NIST's cooking conversion table?","answer":30,"unit":"mL","explanation":"NIST uses 30 mL as a convenient approximate cooking equivalent.","category":"In the kitchen","group":"cooking-volume","source":"kitchen"},{"id":"quarter-cup-ml","text":"About how many millilitres is a quarter US cup in NIST's cooking conversion table?","answer":60,"unit":"mL","explanation":"NIST's rounded kitchen equivalent is 60 mL.","category":"In the kitchen","group":"cooking-volume","source":"kitchen"},{"id":"third-cup-ml","text":"About how many millilitres is a third of a US cup in NIST's cooking conversion table?","answer":80,"unit":"mL","explanation":"The table uses 80 mL for one-third cup.","category":"In the kitchen","group":"cooking-volume","source":"kitchen"},{"id":"three-fluid-ounces-ml","text":"About how many millilitres is three US fluid ounces in NIST's cooking conversion table?","answer":90,"unit":"mL","explanation":"Three rounded 30 mL fluid ounces make 90 mL.","category":"In the kitchen","group":"cooking-volume","source":"kitchen"},{"id":"tablespoon-teaspoons","text":"How many US teaspoons make one US tablespoon?","answer":3,"unit":"teaspoons","explanation":"A tablespoon is three teaspoons in US customary measures.","category":"In the kitchen","group":"cooking-volume","source":"kitchen"},{"id":"cup-tablespoons","text":"How many US tablespoons make one US cup?","answer":16,"unit":"tablespoons","explanation":"One cup is eight fluid ounces, and each fluid ounce is two tablespoons.","category":"In the kitchen","group":"cooking-volume","source":"kitchen"},{"id":"cup-teaspoons","text":"How many US teaspoons make one US cup?","answer":48,"unit":"teaspoons","explanation":"Sixteen tablespoons times three teaspoons gives 48.","category":"In the kitchen","group":"cooking-volume","source":"kitchen"},{"id":"cup-fluid-ounces","text":"How many US fluid ounces are in one US cup?","answer":8,"unit":"fluid ounces","explanation":"One US cup is eight US fluid ounces.","category":"In the kitchen","group":"cooking-volume","source":"kitchen"},{"id":"pint-cups","text":"How many US cups are in one US liquid pint?","answer":2,"unit":"cups","explanation":"The table gives one pint as two cups, or sixteen fluid ounces.","category":"In the kitchen","group":"cooking-volume","source":"kitchen"},{"id":"quart-fluid-ounces","text":"How many US fluid ounces are in one US liquid quart?","answer":32,"unit":"fluid ounces","explanation":"One liquid quart is four cups, or 32 fluid ounces.","category":"In the kitchen","group":"cooking-volume","source":"kitchen"},{"id":"quart-cups","text":"How many US cups are in one US liquid quart?","answer":4,"unit":"cups","explanation":"Two pints at two cups each make four cups.","category":"In the kitchen","group":"cooking-volume","source":"kitchen"},{"id":"ounce-grams","text":"About how many grams is one avoirdupois ounce, rounded to the nearest gram?","answer":28,"unit":"grams","explanation":"One ounce by weight is about 28.35 grams. A fluid ounce measures volume.","category":"In the kitchen","group":"cooking-mass","source":"kitchen"},{"id":"pound-ounces","text":"How many avoirdupois ounces are in one pound?","answer":16,"unit":"ounces","explanation":"A pound contains sixteen ounces by weight.","category":"In the kitchen","group":"cooking-mass","source":"kitchen"},{"id":"ipv4-bits","text":"How many bits are in an IPv4 address?","answer":32,"unit":"bits","explanation":"RFC 791 specifies four octets, or 32 bits, per address.","category":"Technology","group":"ipv4","source":"ipv4"},{"id":"ipv4-octets","text":"How many octets are in an IPv4 address?","answer":4,"unit":"octets","explanation":"The usual dotted address notation has four eight-bit octets.","category":"Technology","group":"ipv4","source":"ipv4"},{"id":"octet-bits","text":"How many bits are in one octet?","answer":8,"unit":"bits","explanation":"An octet is an eight-bit unit.","category":"Technology","group":"ipv4","source":"ipv4"},{"id":"ipv4-min-header","text":"How many bytes is an IPv4 header with no options?","answer":20,"unit":"bytes","explanation":"The minimum header length is five 32-bit words: 5 × 4 = 20 bytes.","category":"Technology","group":"ipv4","source":"ipv4"},{"id":"ipv4-max-header","text":"What is the maximum IPv4 header length in bytes?","answer":60,"unit":"bytes","explanation":"Its four-bit length field permits fifteen 32-bit words: 15 × 4 = 60.","category":"Technology","group":"ipv4","source":"ipv4"},{"id":"si-base-units","text":"How many base units are in the International System of Units, SI?","answer":7,"unit":"units","explanation":"They are the second, metre, kilogram, ampere, kelvin, mole and candela.","category":"Science","group":"measurement-system","source":"si"},{"id":"si-named-derived","text":"How many SI derived units have special names and symbols?","answer":22,"unit":"units","explanation":"NIST lists twenty-two specially named derived units.","category":"Science","group":"measurement-system","source":"si"},{"id":"si-prefixes","text":"How many SI prefixes were officially recognised after the 2022 additions?","answer":24,"unit":"prefixes","explanation":"Ronna, quetta, ronto and quecto expanded the set to 24.","category":"Science","group":"measurement-system","source":"si"},{"id":"si-core-units","text":"How many units are in NIST's core set of base and specially named derived SI units?","answer":29,"unit":"units","explanation":"Seven base units plus twenty-two specially named derived units total 29.","category":"Science","group":"measurement-system","source":"si"},{"id":"si-constants","text":"How many defining constants form the foundation of the modern SI?","answer":7,"unit":"constants","explanation":"Since 2019, the SI has been defined using seven fixed constants.","category":"Science","group":"measurement-system","source":"si"},{"id":"spider-legs","text":"How many walking legs does a spider normally have?","answer":8,"unit":"legs","explanation":"Spiders are arachnids with eight legs; pedipalps are not counted as walking legs.","category":"Animals","group":"spiders","source":"spider"},{"id":"spider-segments","text":"How many main body segments does a spider have?","answer":2,"unit":"segments","explanation":"A spider has a cephalothorax and an abdomen.","category":"Animals","group":"spiders","source":"spider"},{"id":"tarantula-lifespan","text":"Up to how many years can female tarantulas live in managed care, according to San Diego Zoo?","answer":25,"unit":"years","explanation":"The zoo lists up to 25 years for females; lifespan depends on species and care.","category":"Animals","group":"spiders","source":"spider"},{"id":"insect-legs","text":"How many legs does a typical adult insect have?","answer":6,"unit":"legs","explanation":"Six legs distinguish adult insects from eight-legged spiders.","category":"Animals","group":"insects","source":"insect"},{"id":"beetle-segments","text":"How many main body segments does an adult beetle have?","answer":3,"unit":"segments","explanation":"The three main segments are the head, thorax and abdomen.","category":"Animals","group":"beetles","source":"beetle"},{"id":"beetle-life-stages","text":"How many stages are in the usual complete beetle life cycle?","answer":4,"unit":"stages","explanation":"Egg, larva, pupa and adult form the usual complete metamorphosis.","category":"Animals","group":"beetles","source":"beetle"},{"id":"beetle-antennae","text":"How many antennae does an adult beetle normally have?","answer":2,"unit":"antennae","explanation":"Beetles have one pair of antennae on the head.","category":"Animals","group":"beetles","source":"beetle"},{"id":"octopus-arms","text":"How many arms does a giant Pacific octopus normally have?","answer":8,"unit":"arms","explanation":"The aquarium describes eight arms covered in suction cups.","category":"Animals","group":"octopus","source":"octopus"},{"id":"octopus-hatchling-mass","text":"About how many milligrams does a newly hatched giant Pacific octopus weigh, according to Monterey Bay Aquarium?","answer":22,"unit":"mg","explanation":"The aquarium gives about 22 milligrams for a hatchling.","category":"Animals","group":"octopus","source":"octopus"},{"id":"octopus-hatchling-suckers","text":"About how many suckers are on each arm of a newly hatched giant Pacific octopus, according to Monterey Bay Aquarium?","answer":14,"unit":"suckers","explanation":"The aquarium describes about fourteen tiny suckers on each of its eight arms.","category":"Animals","group":"octopus","source":"octopus"},{"id":"standard-deck","text":"How many cards are in a standard French-suited deck, excluding jokers?","answer":52,"unit":"cards","explanation":"Four suits with thirteen ranks each total 52.","category":"Games","group":"playing-cards","source":"cards"},{"id":"deck-suits","text":"How many suits are in a standard French-suited playing-card deck?","answer":4,"unit":"suits","explanation":"The suits are hearts, diamonds, clubs and spades.","category":"Games","group":"playing-cards","source":"cards"},{"id":"cards-per-suit","text":"How many cards are in each suit of a standard 52-card deck?","answer":13,"unit":"cards","explanation":"Each suit has an ace, ranks two to ten, and three face cards.","category":"Games","group":"playing-cards","source":"cards"},{"id":"deck-face-cards","text":"How many jacks, queens and kings are in a standard 52-card deck altogether?","answer":12,"unit":"cards","explanation":"Three face cards in each of four suits gives twelve.","category":"Games","group":"playing-cards","source":"cards"},{"id":"deck-red-cards","text":"How many red-suited cards are in a standard 52-card deck?","answer":26,"unit":"cards","explanation":"Hearts and diamonds each contain thirteen cards.","category":"Games","group":"playing-cards","source":"cards"},{"id":"deck-aces","text":"How many aces are in a standard 52-card deck?","answer":4,"unit":"aces","explanation":"Each of the four suits has one ace.","category":"Games","group":"playing-cards","source":"cards"},{"id":"jenga-blocks","text":"How many wooden blocks are in classic Jenga?","answer":54,"unit":"blocks","explanation":"Hasbro's classic instructions specify 54 hardwood blocks.","category":"Games","group":"jenga","source":"jenga"},{"id":"jenga-start-layers","text":"How many complete layers are in a freshly built classic Jenga tower?","answer":18,"unit":"layers","explanation":"Fifty-four blocks arranged three per layer make eighteen layers.","category":"Games","group":"jenga","source":"jenga"},{"id":"jenga-hands","text":"How many hands may you use at a time to remove a block in classic Jenga?","answer":1,"unit":"hands","explanation":"Use one hand at a time; you may switch which hand you use.","category":"Games","group":"jenga","source":"jenga"},{"id":"jenga-turn-end","text":"Under the cited classic Jenga rules, how many seconds after stacking a block does your turn end if nobody touches the tower first?","answer":10,"unit":"seconds","explanation":"The turn ends after ten seconds, or sooner if the next player touches a block.","category":"Games","group":"jenga","source":"jenga"}]}