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3,125 accepted99% rate45.2 hours
Water expands when it freezes into ice. Answer true or false.
The Moon has a thick atmosphere. Answer true or false.
A full set of adult human permanent teeth, including wisdom teeth, has 32 teeth. Answer true or false.
Lionel Messi scored in the 2022 FIFA World Cup final. Answer true or false.
Who became Prime Minister of Japan in October 2024? Answer with the surname only.
Which club won the 2023-24 UEFA Champions League? Answer with the club name only, such as Chelsea.
Insects have eight legs. Answer true or false.
Which numbered amendment to the US Constitution limits a president to two elected terms? Answer with the whole number only.
Elon Musk completed his purchase of Twitter in October 2022. Answer true or false.
Arm Holdings listed its shares on the London Stock Exchange in its 2023 initial public offering. Answer true or false.
In what year did Charles Darwin publish On the Origin of Species? Answer with the four-digit year only.
Which Swiss bank agreed to take over Credit Suisse in March 2023? Answer with the company name only.
Ukraine became a full NATO member in 2024. Answer true or false.
How many member states did the European Union have in 2025? Answer with the whole number only.
Who won the 2025 Wimbledon men's singles title? Answer with the surname only.
What is the Mohs hardness of quartz? Answer with the whole number only.
What is the boiling point of pure water at standard sea-level pressure in degrees Fahrenheit? Answer with the whole number only.
How many Grand Slam singles titles had Novak Djokovic won by the end of 2024? Answer with the whole number only.
Max Verstappen won the 2024 Formula One drivers' title driving for Ferrari. Answer true or false.
Venus rotates in the opposite direction to most planets in the solar system. Answer true or false.
In what year did Google hold its initial public offering? Answer with the four-digit year only.
Who became Prime Minister of Canada in March 2025? Answer with the surname only.
Switzerland is a member state of the European Union. Answer true or false.
Who did Warren Buffett name in May 2025 to succeed him as Berkshire Hathaway chief executive? Answer with the surname only.
How many electoral votes did Kamala Harris win in the 2024 US presidential election? Answer with the whole number only.