# Math Help - Permutations

1. ## Permutations

Helloe!

How do I work out how many possible combinations I could get from any 5 numbers, e.g. 1, 2, 3, 4, 5

E.g.

12345
21345
23145
23415
23451
etc

2. ## It would be

Originally Posted by Sweeties
Helloe!

How do I work out how many possible combinations I could get from any 5 numbers, e.g. 1, 2, 3, 4, 5

E.g.

12345
21345
23145
23415
23451
etc
$_5P_5=\frac{5!}{(5-5)!}=120$