How many of the 1000 whole numbers from 1 to 1000 are both even and the square of a whole number?

Answer Choices

A. 15

B. 16

C. 30

D. 31

An even perfect square is produced by an even number. The smallest, being 2, which 2^2 = 4.

Then, the largest, being 30, which is 30^2=900.

Counting all of the even numbers from 2-30 yields your answer is A.15.