Top network posts

• 15 Is there a real nonintegral number $x >1$ such that $\lfloor x^n \rfloor$ is a square integer for all $n \in \mathbb{N}$?
• 11 Are there sequence $(u_n)\subset \mathbb R^+$ s.t. $\sum_{n=1}^\infty u_n<\infty $ but $nu_n\not\to 0$?
• 11 What is the last non-zero digit of $(\dots((2018\underset{! \text{ occurs }1009\text{ times}}{\underbrace{!)!)!\dots)!}}$?
• 11 What kind of mathematical rule was broken in here?
• 10 how do I compare those two logs?
• 9 Each group of order 8 has a subgroup of order 2 and a subgroup of order 4.
• 8 Contest math problem about crossing out numbers in the table
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