Select 15 unique numbers from 1 to 38
        Total possible combinations (ways)
        
If order does not matter (e.g. most lottery numbers): 15,471,286,560 (~15 billion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 20,231,404,874,494,893,883,392 (~20 sextillion)
            
                If order does not matter (e.g. most lottery numbers): 15,471,286,560 (~15 billion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 20,231,404,874,494,893,883,392 (~20 sextillion)



