Select 8 unique numbers from 1 to 20000
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 634,032,256,987,328,374,577,840,521,216 (~634032256987.3 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 25,564,180,601,729,081,360,015,222,498,131,968 (~2.5564180601729E+16 million trillion)
If order does not matter (e.g. most lottery numbers): 634,032,256,987,328,374,577,840,521,216 (~634032256987.3 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 25,564,180,601,729,081,360,015,222,498,131,968 (~2.5564180601729E+16 million trillion)