Top network posts

• 127 Why is $\frac{987654321}{123456789} = 8.0000000729?!$
• 72 Is there a simple, constructive, 1-1 mapping between the reals and the irrationals?
• 61 Prove that $\log(n) = O(\sqrt{n})$
• 59 Can every proof by contradiction also be shown without contradiction?
• 35 Making 400k random choices from 400k samples seems to always end up with 63% distinct choices, why?
• 33 How many positive integers $< 1{,}000{,}000$ contain the digit $2$?
• 31 If $n\ne 4$ is composite, then $n$ divides $(n-1)!$.
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