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The factors of 15 are: 1, 3, 5, 15

The factors of 20 are: 1, 2, 4, 5, 10, 20

The Greatest Common Factor: GCF = 5

15/3 = 5/5 = 1

20/2 = 10/2 = 5/5 = 1

3 x 5 = 15

2 x 2 x 5 = 20

The GCF is 5.

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8y ago

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More answers

3 x 5 = 15

2 x 2 x 3 x 5 = 60

3 x 5 = 15, the GCF

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7y ago
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Q: What is the GCF for 15 and 60 using prime factorization?
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