Select 1 unique numbers from 641 to 660
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 20
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 20
If order does not matter (e.g. most lottery numbers): 20
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 20
