ISEE Mathematics Achievement Question 220: Answer and Explanation
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Question: 220
4. What are all the common factors of 24 and 36?
- A. 1, 2, 3, 12, 18
- B. 1, 2, 4, 12, 18, 24
- C. 1, 2, 12, 18, 24, 36
- D. 1, 2, 3, 4, 6, 12
Correct Answer: D
Explanation:
D is correct. A common factor of two numbers is a whole number that is a factor of both numbers. The common factors of 24 and 36 are 1, 2, 3, 4, 6, and 12.