Select 20 unique numbers from 1 to 40
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 137,846,528,820 (~138 billion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 335,367,096,786,357,132,196,461,936,640 (~)
If order does not matter (e.g. most lottery numbers): 137,846,528,820 (~138 billion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 335,367,096,786,357,132,196,461,936,640 (~)