Select 21 unique numbers from 0 to 1
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 2,097,152 (~2.1 million)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 2,097,152 (~2.1 million)
If order does not matter (e.g. most lottery numbers): 2,097,152 (~2.1 million)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 2,097,152 (~2.1 million)