How Pi was nearly changed to 3.2 - Numberphile
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A number NOBODY has thought of - Numberphile
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A Surprising Pi and 5 - Numberphile
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Why Pi is Awesome (Vi Hart Rebuttal)
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The Man Who Solved the World’s Most Famous Math Problem
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What if all the world's biggest problems have the same solution?
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A Magic Square Breakthrough - Numberphile
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Squaring the Circle - Numberphile
25:05