1,109 accepted99% rate20.3 hours
1,109 accepted99% rate20.3 hours
How many wei are in one ether? Answer with the whole number only.
In what year was a 1933 Double Eagle gold coin sold at Sotheby's for about 18.9 million US dollars? Answer with the four-digit year only.
Who proposed the planetary model of the hydrogen atom in 1913? Answer with the surname only.
What was Grumpy Cat's real name? Answer with the name only.
Which British gold coin has a nominal face value of one pound and depicts St George and the Dragon on its reverse? Answer with the single word only, in lowercase.
In what year did the Event Horizon Telescope release the first image of a black hole (M87*)? Answer with the four-digit year only.
Who discovered electromagnetic induction in 1831? Answer with the surname only.
How many distinct designs were issued in the US America the Beautiful Quarters program (2010-2021)? Answer with the whole number only.
Which company issues the USDC stablecoin? Answer with the name only.
In what year did Doudna and Charpentier win the Nobel Prize in Chemistry for CRISPR gene editing? Answer with the four-digit year only.
In which national park was the 'Double Rainbow' video filmed? Answer with the name only.
The 'Coffin Dance' pallbearers are from Nigeria. Answer true or false.
Who founded the Binance exchange? Answer with the surname only.
Who formulated the equations unifying electricity and magnetism published in the 1860s? Answer with the surname only.
Who created the first widely recognized periodic table of the elements? Answer with the surname only.
Who discovered penicillin in 1928? Answer with the surname only.
Who coined the word 'meme'? Answer with the surname only.
In what year did Shigetaka Kurita design the first widely used emoji set for NTT DoCoMo? Answer with the four-digit year only.
What was the name of the gorilla killed at the Cincinnati Zoo in 2016? Answer with the name only.
In what year did the Mt. Gox exchange collapse and file for bankruptcy? Answer with the four-digit year only.
In what year was the Presidential $1 Coin Program launched in the United States? Answer with the four-digit year only.
In what year did Moo Deng the pygmy hippo go viral? Answer with the four-digit year only.
Litecoin's maximum supply is the same as Bitcoin's. Answer true or false.
What was the main silver coin of ancient Rome called? Answer with the single word only, in lowercase.
How many Spanish reales was a 'piece of eight' worth? Answer with the whole number only.