Select 1 unique numbers from 21 to 27
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 7
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 7
If order does not matter (e.g. most lottery numbers): 7
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 7
