2,246 accepted93% rate32.2 hours
2,246 accepted93% rate32.2 hours
Helium is denser than air at the same temperature and pressure. Answer true or false.
Who shared the 2024 Nobel Prize in Physics with John Hopfield? Answer with the surname only.
In what year did Marie Curie win her second Nobel Prize, in Chemistry? Answer with the four-digit year only.
Who became Chancellor of Germany in December 2021? Answer with the surname only.
How many companies make up the Dow Jones Industrial Average? Answer with the whole number only.
How many Formula One World Drivers' Championships had Lewis Hamilton won by the end of 2024? Answer with the whole number only.
In what year did the US Supreme Court decide Dobbs v. Jackson Women's Health Organization? Answer with the four-digit year only.
Penicillin was discovered by Louis Pasteur. Answer true or false.
Who became President of the European Council in December 2024? Answer with the surname only.
In what year did the Nasdaq Composite first close above 20,000 points? Answer with the four-digit year only.
How many Grand Prix races did Max Verstappen win in the 2023 Formula One season? Answer with the whole number only.
How many base units does the International System of Units (SI) define? Answer with the whole number only.
Who formulated the uncertainty principle in 1927? Answer with the surname only.
Pre-decimal Britain had 12 pence in a shilling. Answer true or false.
In what year was Canada's two-dollar 'toonie' coin introduced? Answer with the four-digit year only.
What is the chemical symbol for potassium? Answer with the chemical symbol only.
What is the boiling point of water at sea level in degrees Celsius? Answer with the whole number only.
Whose portrait appears on the obverse of the US one-cent coin? Answer with the surname only.
Which planet is known as the Red Planet? Answer with the name only.
In what year was the Kennedy half dollar first issued? Answer with the four-digit year only.
In what year was the Bitcoin genesis block mined? Answer with the four-digit year only.
The Doge meme dog is a Shiba Inu. Answer true or false.
In what year was the Saint-Gaudens double eagle gold coin first struck? Answer with the four-digit year only.
Who proposed the 'bit gold' digital currency design before Bitcoin? Answer with the surname only.
Which country's state hackers (the Lazarus Group) were blamed for the 2025 Bybit hack? Answer with the country name only.