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Factors of 8 = 1,2,4,8

Factors of 15 = 1,3,5,15

The highest common factor is 1

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13y ago
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12y ago

The smallest common factor of 15 and 9 is 3.

Factors of 15: 3, 5

Factors of 9: 3

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11y ago

Factors of 3: 1, 3

Factors of 9: 1, 3, 9

Factors of 15: 1, 3, 5, 15

GCF (3, 9, 15) = 3

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12y ago

The GCF/HCF of 9 and 15 is 3.

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Q: What is the highest common factor of 15 and 9?
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