Select 20 unique numbers from 20 to 100
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 4,694,436,188,839,116,800 (~4.7 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 11,421,103,231,083,779,289,875,817,848,104,812,544 (~1.1421103231084E+19 million trillion)
If order does not matter (e.g. most lottery numbers): 4,694,436,188,839,116,800 (~4.7 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 11,421,103,231,083,779,289,875,817,848,104,812,544 (~1.1421103231084E+19 million trillion)