Select 2 unique numbers from 9 to 90
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 3,321
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 6,642
If order does not matter (e.g. most lottery numbers): 3,321
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 6,642