Select 20 unique numbers from 0 to 21
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 231
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 562,000,363,888,803,840,000 (~562 million trillion)
If order does not matter (e.g. most lottery numbers): 231
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 562,000,363,888,803,840,000 (~562 million trillion)