Can you find a strategy to save these mathematicians lives in a coin flip game?
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Find the fake among 8 coins with minimum number of weighings (Interview intelligence question)
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Can you solve this number theory problem from Argentina math olympiad?
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Los Angeles Fire -- Vocabulary You Should Know - from the news
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Interesting number theory from Russian Math Olympiad
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Beautiful geometry challenge in Junior Balkan Math Olympiad
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Beautiful inequality with geometrical solution from Russia Math Olympiad
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Can you crack this number theory from Costa Rica Math Olympiad
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