Select 21 unique numbers from 1 to 64
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 41,107,996,877,935,672 (~41.1 thousand trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 2,100,246,291,285,423,760,498,810,813,415,424,000 (~2.1002462912854E+18 million trillion)
If order does not matter (e.g. most lottery numbers): 41,107,996,877,935,672 (~41.1 thousand trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 2,100,246,291,285,423,760,498,810,813,415,424,000 (~2.1002462912854E+18 million trillion)