Question

The apartments in Greg's building are named using the letters A,B,C, and D and the digits 1 through 9. How many apartments are there in Greg's building if each apartment is named by a single letter followed by a single digits

Answer 1

Answer:

36

Step-by-step explanation:

If there are 9 apartnments for everyletter 9 times the four letters is 36

9 * 4 = 36