Select 2 unique numbers from 1 to 999999
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 499,998,500,001 (~500 billion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 999,997,000,002 (~1000 billion)
If order does not matter (e.g. most lottery numbers): 499,998,500,001 (~500 billion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 999,997,000,002 (~1000 billion)