2
$\begingroup$

How can I show that a group with 380 elements is not simple?

  • 8
    Since you are new, I want to give you some advice about the site: **To get the best possible answers, you should explain what your thoughts on the problem are so far**. That way, people won't tell you things you already know, and they can write answers at an appropriate level; also, people are much more willing to help you if you show that you've tried the problem yourself.2012-07-09
  • 0
    In fact, groups of order $p(p+1)$, for $p$ a prime, always have a normal subgroup, of order $p$ or order $p+1$.2012-07-09

1 Answers 1