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What is the greatest common factor of 15 and 51

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7 votes

Answer:

3

Explanation:

You can find the factors 15 and 51, and see what numbers they have in common.

51 = 1, 3, 17, 51

15 = 1, 3, 5, 15

If you look at it, the two numbers they have in common are 1 and 3. But the greatest out of the two is 3.

Answer: The greatest common factor (GCF) of 15 and 51 is 3

Hope this helps! :)

User Lee Jeongmin
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