Question

How many license plates can be made of the form XXXX?-YY?, where X is a letter of the alphabet and Y is a numeral? 0-9?

Answer 1

Answer: 45,697,600

Explanation:

There are 26 letters in the alphabet and numerals to choose from. There is nothing that says that letters and numbers cannot be repreated. So,

X X X X - Y Y

= 26·26·26·26·10·10

= 26⁴(10)²

= 45,697,600