A Surprising Pi and 5 - Numberphile
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Strings and Loops within Pi - Numberphile
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Game of Cat and Mouse - Numberphile
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Calculating π with Avogadro's Number
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The Feigenbaum Constant (4.669) - Numberphile
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Gabriel's Horn Paradox - Numberphile
27:31
Divisibility Tricks - Numberphile
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Why is this 15-Puzzle Impossible? - Numberphile
22:38