Select 2 unique numbers from 6 to 45
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 780
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 1,560
If order does not matter (e.g. most lottery numbers): 780
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 1,560