Select 7 unique numbers from 1 to 20000
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 253,701,698,389,367,642,734,460,928 (~253701698.4 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 1,278,656,559,882,412,858,908,543,549,440 (~1278656559882.4 million trillion)
If order does not matter (e.g. most lottery numbers): 253,701,698,389,367,642,734,460,928 (~253701698.4 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 1,278,656,559,882,412,858,908,543,549,440 (~1278656559882.4 million trillion)