What is the permutation and combinations for finding lottery numbers?

Answer by  VB (361)

Since order doesn't matter, this is a combination. If you want to know how many possible number combos there are, you calculate Combination(how many numbers available, how many winning numbers).

Answer by  Sting1 (686)

If the order doesn't matter, it's a combination. Else, it's a permutation. If you have a pool of 90 numbers to choose from, and you have to guess 6 correct numbers (no repetitions and order doesn't matter) the combination is "90 choose 6" = 622. 614. 630 Formula = 90! /(90-6)! 6!