Answer :
151,200
This represents the multiplication of all the choices available for each of the 6 blanks and when you multiply these numbers you get : 10*9*8*7*6*5 = 90 * 56 * 30 = 151,200. This means we have 151,200 different codes possible if each digit cannot be repeated
This represents the multiplication of all the choices available for each of the 6 blanks and when you multiply these numbers you get : 10*9*8*7*6*5 = 90 * 56 * 30 = 151,200. This means we have 151,200 different codes possible if each digit cannot be repeated