Question

Given a special license plate tag consists of 6

characters for a small country.
The first 3 characters must be letters and the last 3
must be a single digit number _ Characters can repeat-
The only restriction is that you 't have the first 3
characters be the same (eg- AAA. BBB, CCC, .
etc.). How many unique tags are possible?

Answer 1

d. 17,550,000

Explanation:

(26×26×26 - 26) × (10×10×10)

17,550,000

Answer 2

First letter can be 1 out of 26

Second letter can be 1 out of 25

Third letter can be 1 out of 24

Each number can be 1 out of 10

Total combinations: 26 x 25 x 24 x 10 x 10 x 10 = 15,600,000