# Category:Definitions/Factorials

This category contains definitions related to Factorials.
Related results can be found in Category:Factorials.

The factorial of $n$ is defined as:

 $\ds n!$ $=$ $\ds \prod_{k \mathop = 1}^n k$ $\ds$ $=$ $\ds 1 \times 2 \times \cdots \times \paren {n - 1} \times n$

where $\ds \prod$ denotes product notation.

## Subcategories

This category has the following 4 subcategories, out of 4 total.

## Pages in category "Definitions/Factorials"

The following 11 pages are in this category, out of 11 total.