Numerical Trivia
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97 free Numerical trivia questions with answers — trivia quiz, new questions added Oct 2026.
40 free numerical trivia questions with answers. These numerical trivia questions all have one thing in common: the answer is a number. How many amendments the US Constitution has, how many volts an electric eel delivers, how many teeth a shark goes through, how many countries ratified the Geneva Conventions, how many seats are in the biggest stadium in America, how many days Santiago went without a fish. The set roams across science, history, sport, business, literature and nature so nobody can coast on one specialty, and the wrong answers are spread above and below the right one so guessing the middle number will not save you. It works as a stand-alone numbers round for a pub quiz, as trivia questions with numerical answers for a maths-class warm-up, or as a lead-in to a harder set. Every answer was checked against encyclopaedia entries before publishing.
30 of 97 questions with answers and explanations. Play the quiz
Q 01How many times has the US Constitution been amended?
27
27: ratification takes three-fourths of the states, a bar so high that thousands of proposed amendments have failed.
Q 02How many essays make up The Federalist Papers?
85
85: Hamilton, Madison and Jay wrote them under the pen name Publius to urge New Yorkers to ratify the proposed Constitution.
Q 03Up to how many volts can the most powerful species of electric eel deliver?
860
860: Humboldt's 1800 account of eels leaping out to shock horses was doubted for 200 years, until a 2016 study reported eels leaping at threats.
Q 04Roughly how many living species of fish are known?
About 33,000
About 33,000: yet biologists no longer treat fish as one true group, because land vertebrates, humans included, evolved from lobe-finned fish.
Q 05Over a lifetime, roughly how many teeth can some sharks shed?
Thousands
Thousands: sharks replace teeth continuously, and because their skeletons are cartilage, those hard teeth are often all that fossilizes.
Q 06How many aerial victories was Germany's Erich Hartmann, the top-scoring fighter ace in history, credited with?
352
352: when the war ended, the Soviets held him in prison camps for 10 years, releasing him only in 1955.
Q 07How many aerial victories was the Red Baron officially credited with?
80
80: Canadian pilot Roy Brown was credited with shooting him down in 1918, but he was most likely killed by Australian ground fire.
Q 08About how many F-4 Phantom II fighters were built?
About 5,200
About 5,200: designed for the Navy, it was adopted by the Air Force too and flew combat in the Vietnam War.
Q 09How many countries have ratified the four 1949 Geneva Conventions?
196
196: every state is a party, and the treaties were rewritten in 1949 after World War II showed civilians had no convention protecting them.
Q 10How many electoral votes does a candidate need to win the US presidency?
270
270: that is a majority of 538, and if nobody reaches it, the House of Representatives picks the president, with each state delegation casting one vote.
Q 11What is the official seating capacity of Michigan Stadium, nicknamed the Big House?
About 107,000
About 107,000: officially 107,601, and coach Fielding Yost had its footings built so the 1927 stadium could later grow past 100,000.
Q 12How many Apollo missions landed astronauts on the Moon?
6
6: Apollo 13 would have made seven, but an oxygen tank exploded on the way, so the crew circled the Moon without landing and came home.
Q 13About how many Earth days does one year on Mars last?
About 690
About 690: that is 687 Earth days, and because its axis tilts about 25 degrees, Mars has seasons like Earth's.
Q 21How many moons does Mars have?
2
2: the larger, Phobos, is creeping closer to Mars by about 2 metres a century and should break apart or crash within about 50 million years.
Q 22About how much did the heaviest bony fish on record, a giant sunfish from the North Atlantic, weigh?
About 2,700 kg
About 2,700 kg: ocean sunfish are thought to bask on their sides at the surface to warm up after dives into cold, deep water.
Q 23How many companies make up the Dow Jones Industrial Average?
30
30: it is price-weighted, so a company with a high share price moves the average more than a bigger company with cheaper shares.
Q 14How many British prime ministers had studied at Oxford, as of 2025?
31
31: the university is thought to have grown fast after about 1167, when Henry II barred English students from the University of Paris.
Q 15About how many students sat the very first SAT in June 1926?
About 8,000
About 8,000: 8,040 sat it, and its creator, Carl Brigham, had worked on the Army's World War I intelligence tests for recruits.
Q 16About how many pies did Laurel and Hardy use in their 1927 pie-fight film The Battle of the Century?
About 3,000
About 3,000: some estimates run as high as 10,000, and the film's long-lost second reel only turned up in 2015.
Q 17How many days has Santiago gone without catching a fish when The Old Man and the Sea begins?
84
84: convinced his luck must change, he takes his skiff far into the Gulf Stream and hooks a giant marlin, only for sharks to leave just its skeleton.
Q 18By his own count, how many times did Hemingway rewrite the ending of A Farewell to Arms?
39
39: yet when scholars gathered his drafts for a 2012 edition, they found 47 variations.
Q 19How many amino acids make up a molecule of human insulin?
51
51: Frederick Sanger's work decoding insulin, the first protein ever sequenced, won him the 1958 Nobel Prize in Chemistry.
Q 20How many chemical elements are known on the periodic table, as of 2025?
118
118: Dmitri Mendeleev's 1869 table won out, though Lothar Meyer had independently worked out a similar system.
Q 24How many stockbrokers signed the 1792 Buttonwood Agreement?
24
24: their pact organized securities trading in New York, and the New York Stock Exchange traces its founding to it.
Q 25By about what percentage did the Dow Jones fall from Black Thursday to Black Tuesday in October 1929?
About 25%
About 25%: after a long speculative boom, many investors had bought stocks with borrowed money, so they stood to lose heavily as prices fell.
Q 26How many audio oscillators did Walt Disney's studio buy from Hewlett-Packard for Fantasia?
8
8: Disney was HP's first big customer, and the company was formally founded soon after, in 1939.
Q 27How many dollars was Carolyn Davidson paid for designing the Nike Swoosh in 1971?
35
35: yet in 1983, Phil Knight gave her 500 shares of Nike stock as thanks.
Q 28About how many people does Walmart employ worldwide, as of 2024?
About 2,100,000
About 2,100,000: before founding it, Sam Walton ran a Ben Franklin five-and-dime franchise in Arkansas.
Q 29About how many Earths could fit inside the Sun?
About 1,300,000
About 1,300,000: and in about 5 billion years the Sun is expected to swell into a red giant that could swallow Earth.
Q 30About how many miles long is the Oxford–Cambridge Boat Race course on the Thames?
About 4.2
About 4.2: the river winds, so the crews toss a coin for stations, and each station has the inside of different bends.