Select 1 unique numbers from 321 to 640
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 320
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 320
If order does not matter (e.g. most lottery numbers): 320
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 320
