53. The employees at a hotel reservation center assign an 8-digit confirmation number (CN) to each customer making a reservation. The first digit in each CN is 8. The other 7 digits can be any digit 0 through 9, and digits may repeat. How many possible 8-digit CNs are there?

Answer and Explanation

Your Answer is

Correct Answer is C

Explanation

There are ten choices of 0-9 for the next 7 digits. So it's 7 possible in 10.