Select 2 unique numbers from 1 to 721
        Total possible combinations (ways)
        
If order does not matter (e.g. most lottery numbers): 259,560 (~260 thousand)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 519,120 (~519 thousand)
            
                If order does not matter (e.g. most lottery numbers): 259,560 (~260 thousand)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 519,120 (~519 thousand)



