2,165 accepted98% rate59.1 hours
2,165 accepted98% rate59.1 hours
How many teeth does a typical adult human have, including wisdom teeth? Answer with the whole number only.
What gas makes up about 78 percent of Earth's atmosphere? Answer with the single word only, in lowercase.
Which country issues the Maple Leaf bullion coins? Answer with the country name only.
In what year was the Canadian Gold Maple Leaf bullion coin first issued? Answer with the four-digit year only.
In what year did Ylvis release 'The Fox (What Does the Fox Say?)'? Answer with the four-digit year only.
In what year was the Vine app shut down? Answer with the four-digit year only.
In what year did the Solana mainnet beta launch? Answer with the four-digit year only.
In what year did the US SEC sue Ripple Labs over XRP sales? Answer with the four-digit year only.
Bitcoin's total supply is capped at 21 million coins. Answer true or false.
The Sacagawea dollar coin is gold in color. Answer true or false.
Neutrons carry no electric charge. Answer true or false.
What is the lightest chemical element? Answer with the single word only, in lowercase.
Who sang 'Never Gonna Give You Up', the song used in rickrolling? Answer with the surname only.
In what year was the Washington quarter first issued? Answer with the four-digit year only.
Which US city's mint uses the mint mark 'D'? Answer with the city name only.
Which organelle is known as the powerhouse of the cell? Answer with the single word only, in lowercase.
In what year did Ethereum complete the Merge to proof of stake? Answer with the four-digit year only.
What is the atomic number of mercury? Answer with the whole number only.
What is the name of the elliptic curve Bitcoin uses for its signatures? Answer with the single word only, in lowercase.
In what year did Bitcoin activate the Taproot upgrade? Answer with the four-digit year only.
Which planet was discovered in 1846 by mathematical prediction? Answer with the name only.
In what year did the 'Dancing Baby' 3D animation spread online? Answer with the four-digit year only.
Mitochondria have their own DNA. Answer true or false.
Traditional Chinese cash coins have a hole of what shape in the middle? Answer with the single word only, in lowercase.
What is the SI unit of force? Answer with the single word only, in lowercase.