That Viral Math Problem (Cheryl's Birthday) - Numberphile
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The Josephus Problem - Numberphile
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Monkeys and Coconuts - Numberphile
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The 379 page proof that 1+1=2
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The SAT Question Everyone Got Wrong
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The Hydra Game - Numberphile
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This one weird trick will get you infinite gold - Dan Finkel
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Two Candles, One Cake - Numberphile
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