Question

A license plate consist of 3 digits, 3 letters determine the number of different license plate if the first letter must be N,M, or P and repetition and numbers is not permitted

Answer 1

1800.

Explanation:

If N is the first letter the next 2 letters will be the number of permutations of 2 from 25 = 25!/ (25-2)!

= 600.

If the first number is M or P the number is the same so that makes 1800 possibilities.