Question

a car lincense plate consists of 7 characters. the first 3 characters are letters and the last 4 characters are numerals from 0 to 9. how many possible license plates can we construct, if no letter can be repeated?

Answer 1

15,600,000

Explanation:

26 x 25 x 24 x 10 x 10 x 10 x 10 = 15,600,000

So, there are 15,600,000 possible license plates that can be constructed if no letter can be repeated.