# Homework Help: Factorial simplification problem

1. Oct 20, 2011

### NewtonianAlch

1. The problem statement, all variables and given/known data
In my calculus book they have the following simplification:

$\frac{k!}{(k+1)!}$ = $\frac{1}{k+1}$

I do not quite understand how that's occured.

2. Oct 21, 2011

### PAllen

Have you tried simply writing out the numerator and denominator from the factorial definition?

3. Oct 21, 2011

Doh!