Select 20 unique numbers from 10 to 99
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 50,980,740,277,700,943,872 (~51 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 124,031,145,399,950,339,440,291,240,620,754,731,008 (~1.2403114539995E+20 million trillion)
If order does not matter (e.g. most lottery numbers): 50,980,740,277,700,943,872 (~51 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 124,031,145,399,950,339,440,291,240,620,754,731,008 (~1.2403114539995E+20 million trillion)