Select 2 unique numbers from 1 to 1000000000000000000
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 500,000,000,000,000,021,210,318,687,008,980,992 (~)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 1,000,000,000,000,000,042,420,637,374,017,961,984 (~)
If order does not matter (e.g. most lottery numbers): 500,000,000,000,000,021,210,318,687,008,980,992 (~)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 1,000,000,000,000,000,042,420,637,374,017,961,984 (~)