Select 20 unique numbers from 0 to 99
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 535,983,370,403,809,722,368 (~536 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 1,303,995,018,204,712,578,585,373,750,934,665,953,280 (~1.3039950182047E+21 million trillion)
If order does not matter (e.g. most lottery numbers): 535,983,370,403,809,722,368 (~536 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 1,303,995,018,204,712,578,585,373,750,934,665,953,280 (~1.3039950182047E+21 million trillion)