# What are Permutations?

Nov 7, 2014

Permutations of items are arrangements of items.

Examples

All six permutations of $\left\{a , b , c\right\}$ are:

$\left\{a b c , a c b , b a c , b c a , c a b , c b a\right\}$

Also, all 6 permutations of $\left\{a , b , c\right\}$ chosen at 2 items at a time are

$\left\{a b , b a , a c , c a , b c , c b\right\}$

I hope that this was helpful.