ISEE Mathematics Achievement Question 243: Answer and Explanation
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Question: 243
4. Which of the following is NOT a multiple of 6 ?
- A. 12
- B. 18
- C. 23
- D. 24
Correct Answer: C
Explanation:
C The question asks which number is NOT a multiple of 6. 6 × 2 = 12 and 6 × 3 = 18, so (A) and (B) are multiples. 6 does not divide evenly into 23, so keep (C). 6 × 4 = 24 and 6 × 7 = 42 so (D) can be eliminated. The correct answer is (C).