Select 21 unique numbers from 1 to 128
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 615,377,305,196,521,913,843,712 (~615377.3 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 31,440,206,313,577,891,176,352,468,912,547,447,101,718,528 (~3.1440206313578E+25 million trillion)
If order does not matter (e.g. most lottery numbers): 615,377,305,196,521,913,843,712 (~615377.3 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 31,440,206,313,577,891,176,352,468,912,547,447,101,718,528 (~3.1440206313578E+25 million trillion)