# Puzzle Solutions, Issue 05

The answers to the puzzles that appeared in issue 05

These solutions relate to puzzles found in Issue 05 of the magazine.

### Largest odd factors

The result will always be $n^2$.

### Square factorials

$\displaystyle\frac{1!\times2!\times3!\times…\times100!}{50!}$ is a square number.

• ### Book of the Year 2020

We announce the winner of this coveted prize