Select 20 unique numbers from 1 to 320
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 28,419,027,580,261,206,180,606,223,843,328 (~28419027580261 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 69,140,709,270,444,802,048,710,420,141,548,700,998,768,556,769,280 (~6.9140709270445E+31 million trillion)
If order does not matter (e.g. most lottery numbers): 28,419,027,580,261,206,180,606,223,843,328 (~28419027580261 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 69,140,709,270,444,802,048,710,420,141,548,700,998,768,556,769,280 (~6.9140709270445E+31 million trillion)