Select 1 unique numbers from 20 to 99
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 80
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 80
If order does not matter (e.g. most lottery numbers): 80
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 80