Select 20 unique numbers from 20 to 40
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 21
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 51,090,942,171,709,440,000 (~51.1 million trillion)
If order does not matter (e.g. most lottery numbers): 21
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 51,090,942,171,709,440,000 (~51.1 million trillion)