Top network posts

• 92 What is the smallest integer greater than 1 such that $\frac12$ of it is a perfect square and $\frac15$ of it is a perfect fifth power?
• 89 What proportion of positive integers have two factors that differ by 1?
• 82 Help with a prime number spiral which turns 90 degrees at each prime
• 61 Is it possible to have 2 different but equal size real number sets that have the same mean and standard deviation?
• 57 Infinite area under curve without using derivatives and integrals
• 43 Contradiction between first derivative formal definition and derivative rules?
• 33 Is nᵐ>mⁿ if m>n?
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