15. In Section 5.2 of the textbook Ms. Belfiores uses for her class, the practice problems are numbered 1 through 50. For homework, she assigned only the problems whose numbers were multiples of 3. The answers for all odd-numbered problems are given in the back of the textbook. For how many of the assigned problems was the answer NOT given in the back of the textbook?

Answer and Explanation

Your Answer is

Correct Answer is C

Explanation

In 1-50, there are 16 multiples of 3, and 8 of them are not odd numbers. Therefore 8.