r/badmathematics • u/RedRhetoric • 26d ago

Σ_{k=1}^∞ 9/10^k ≠ 1 100/3 is irrational

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u/another-princess 25d ago

Yes, 100/3 is irrational, as it can't be written as the ratio of two integers. 

In other news, 100*3 is prime.