How many combinations?

Question

A driver wants his license plate to start with the letters BOB.  How many combinations are possible that end with 374?

 

License arrangements Scheme: 5 characters in the plate being either a letter or a number.  Number of Registered Cars: 260

Answer 1

Very unclear & vague. What does 260 have to do with this?

What is needed is a definition (exact) of how many characters are in every license (length of character string), and what possible characters are allowed in each position.

 

"License arrangements Scheme: 5 characters in the plate being either a letter or a number." ⇐That's vague.