Select 1 unique numbers from 500 to 0
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): -499
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): -499
If order does not matter (e.g. most lottery numbers): -499
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): -499