Select 15 unique numbers from 9000 to 9999
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 688,141,030,994,399,530,431,635,236,323,328 (~6.881410309944E+14 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 899,864,387,800,469,839,516,889,618,940,048,355,595,649,024 (~8.9986438780047E+26 million trillion)
If order does not matter (e.g. most lottery numbers): 688,141,030,994,399,530,431,635,236,323,328 (~6.881410309944E+14 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 899,864,387,800,469,839,516,889,618,940,048,355,595,649,024 (~8.9986438780047E+26 million trillion)