Select 20 unique numbers from 100 to 200
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 668,324,943,343,022,112,768 (~668.3 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 1,625,969,096,773,777,612,425,994,891,235,388,555,264 (~1.6259690967738E+21 million trillion)
If order does not matter (e.g. most lottery numbers): 668,324,943,343,022,112,768 (~668.3 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 1,625,969,096,773,777,612,425,994,891,235,388,555,264 (~1.6259690967738E+21 million trillion)