Select 1000 unique numbers from 0 to 20
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 506,361,081,139,239,260,424,292,674,605,623,311,073,280 (~)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): inf (~0 )
If order does not matter (e.g. most lottery numbers): 506,361,081,139,239,260,424,292,674,605,623,311,073,280 (~)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): inf (~0 )