How many even 4 digit whole numbers are there?
A. 1358
B. 7250
C. 4500
D. 3600
Answer:C
How many even 4 digit whole numbers are there?
A. 1358
 B. 7250
 C. 4500
 D. 3600

Explanation: The thousands digit cannot be zero, so there are 9 choices. There are 10 possibilities for the hundreds digit and 10 possibilities for the tens digit. The units digit can be 0, 2, 4, 6 or 8, so there are 5 choices. By the basic counting principle, the number of even five-digit whole numbers is 9 × 10 × 10 × 5 = 45,00.
