Select 21 unique numbers from 30 to 21
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): -9,223,372,036,854,775,808
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): -9,223,372,036,854,775,808
If order does not matter (e.g. most lottery numbers): -9,223,372,036,854,775,808
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): -9,223,372,036,854,775,808