Question

The acces code to a house's security system consists of six digits. How many different codes are available each digit can be repeated?​

Answer 1

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