Top network posts

• 97 Express 99 2/3% as a fraction? No calculator
• 54 Proof that $2^{222}-1$ is divisible by 3
• 27 Rational + irrational = always irrational?
• 24 when is $n!+10$ a perfect square?
• 23 How can I prove that one of $n$, $n+2$, and $n+4$ must be divisible by three, for any $n\in\mathbb{N}$
• 17 Infinite Series $\sum\limits_{k=1}^{\infty}\frac{k^n}{k!}$
• 16 Why is the multiset of eigenvalues called spectrum?
• View more network posts →