Select 15 unique numbers from 30 to 20
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): -205,891,132,094,649
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): -205,891,132,094,649
If order does not matter (e.g. most lottery numbers): -205,891,132,094,649
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): -205,891,132,094,649