# Math Help - Factorials equation

1. ## Factorials equation

How do I solve this for n without making a guess? n!(5-n)!=4! Is it possible to simply drop all the ! signs?

2. ## Re: Factorials equation

Hello, Stuck Man!

How do I solve this for n without making a guess? . $n!(5-n)!\:=\:4!$
Is it possible to simply drop all the ! signs? . No

There are only six possible choices: 0, 1, 2, 3, 4, 5.

We find the solutions are: . $n \,=\,1,\,4$