Question

In cornville, bicycle license plates have 2 letters followed by a 1 digit number. How many different license plates are possible

Answer 1

There are two letters.
Let first letter be A
Let second letter be B

There is one 2 digit number
So, let the number be 5

Now, lets see which are the possible bicycle licence plates:
1. AB5
2. BA5
3. A5B
4. B5A
5. 5AB
6. 5BA
Now, there are 6 different licence plates.

So, 6 different licence plates are possible.