1. The problem statement, all variables and given/known data A license plate has three letters followed by three numbers. Suppose the digits from 0...9 can be used, except all three digits cannot be zero, and that any letter from A-Z with repeats can be used. How many plates are possible? 2. Relevant equations My question is on the 0. Does this mean NONE can be used or only TWO? 3. The attempt at a solution I was marked wrong for the following: I set up as 26 x 26 x 26 x 10 x 10 x 9 = 15,818,400 What is the correct way to set up this problem? Thanks!