ISEE Word Problems Question 165: Answer and Explanation
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Question: 165
1. If x is a factor of 16 and y is a factor of 28, which is the least value that xy could be a factor of?
- A. 448
- B. 112
- C. 2
- D. 1
Correct Answer: D
Explanation:
The answer is D
List out the factors for both 16 and 28, putting the factors in pairs to be sure you catch all of them. x could be 1, 16, 2, 8, or 4. y could be 1, 28, 2, 14, 4, or 7. xy could be as small as 1 and as great as 448, but the least value xy could be a factor of is 1.