A legendary question from the toughest exam
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Can you solve this Oxford admissions question?
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Very few people can solve. Which martini glass is closest to 1/2 full?
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The Man Who Solved the World’s Most Famous Math Problem
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How To Calculate Any Square Root
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Can you solve this elementary school question from China?
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The unsolved math problem inspired by a children's game
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Something Strange Happens When You Keep Squaring
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