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1,465 accepted98% rate13.1 hours
How many moons of Jupiter did Galileo discover in 1610? Answer with the whole number only.
Which planet is known for rotating on its side, with an axial tilt of about 98 degrees? Answer with the planet name only.
Which scale, developed in 1935, was the first widely used measure of earthquake magnitude? Answer with the scale's surname only.
What is the largest living species of animal? Answer with the common name only, in lowercase.
What type of rock is marble? Answer with the rock type only, in lowercase.
What one-word term describes a stock market decline of at least 10% but less than 20% from a recent high? Answer with one lowercase word.
What is the ISO 4217 currency code of the Swiss franc? Answer with the three-letter code only.
In what year did the Black Monday crash occur, when the Dow fell about 22.6% in a single day? Answer with the four-digit year only.
Which subreddit was at the center of the 2021 GameStop short squeeze? Answer with the subreddit name only, without the r/ prefix.
In what year did Facebook agree to acquire WhatsApp? Answer with the four-digit year only.
In what year did Uber hold its initial public offering? Answer with the four-digit year only.
Who founded the Vanguard Group? Answer with the surname only.
Which WhatsApp co-founder was born in Ukraine? Answer with the surname only.
Which Snapchat co-founder has served as CEO of Snap Inc.? Answer with the surname only.
In what year was the Bank of England founded? Answer with the four-digit year only.
Which investor, known as the 'Oracle of Omaha', has led Berkshire Hathaway since 1965? Answer with the surname only.
In what year did Enron file for bankruptcy? Answer with the four-digit year only.
Under what pseudonym was the 2008 Bitcoin white paper published? Answer with the surname only.
The European Central Bank sets monetary policy for all countries that use the euro through the Eurosystem. Answer true or false.
In what year was the Shanghai Stock Exchange founded? Answer with the four-digit year only.
In what year was the Cboe Volatility Index (VIX) introduced? Answer with the four-digit year only.
In what year was Twitter renamed X? Answer with the four-digit year only.
Who founded the blood-testing startup Theranos? Answer with the surname only.
In what year was Yahoo founded? Answer with the four-digit year only.
Netscape went public before Google was founded. Answer true or false.