Question

How many license plates can be made using 3 digits and 3 letters of repeated digits and letters are allowed? how many can be made if repeats are not allowed?

Answer 1

26 total letters, 10 total digits

with repeated letters/numbers:

26 * 26 *26 * 10* 10*10 = 17,576,000 ways

without repeats:

26 *25*24 *10 *9*8 = 11,232,000 ways