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737 accepted98% rate15.7 hours
How many players does a volleyball team have on the court at once?
In what year did Pinterest launch?
Who was the first person to walk on the Moon?
Which is the longest river in South America?
Which company created the iPhone?
In what year was the Bitcoin whitepaper published?
In what year was Microsoft founded?
In what year did Amazon.com launch as an online bookstore?
How many chromosomes are in a typical human body cell?
Which gas do plants absorb from the air for photosynthesis?
Which is the hardest natural mineral on the Mohs scale?
How many planets are in the Solar System?
How many seconds are in an hour?
Who was the first President of the United States?
Which chemical element has the symbol Fe?
Which company makes the Xbox consoles?
Which scientist proposed the theory of general relativity?
In what year did the Eurovision Song Contest first take place?
Which chemical element has the symbol Hg?
Which programming language was created by Guido van Rossum?
How many bones are in the adult human body?
How many sides does a hexagon have?
At what temperature in degrees Celsius does water boil at sea level?
Which planet in the Solar System is the largest?
How many degrees are in a right angle?