A license plate is to have 3 digits followed by 2 uppercase letters. What is the number of different license plates possible if repetition of numbers and letters is not permitted?

Answer 1

Can we start with zero?
if so, then number of plates
=10x9x8x26x25 = 468000

If we can't start with a zero
= 9x9x8x26x25 = 421200