Select 12 unique numbers from 1 to 15
        Total possible combinations (ways)
        
If order does not matter (e.g. most lottery numbers): 455
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 217,945,728,000 (~218 billion)
            
                If order does not matter (e.g. most lottery numbers): 455
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 217,945,728,000 (~218 billion)



