In arithmetic, a permutation is an association of parts of a set, during which the order of the weather issues. For instance, there are 6 permutations of the set {1, 2, 3}:
- 123
- 132
- 213
- 231
- 312
- 321
The variety of permutations of a set with n parts is n!. So, the variety of permutations of a set with 8 parts is 8! = 8 7 6 5 4 3 2 * 1 = 40,320.
