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Since 9 is a factor of 72, it's automatically the GCF.
The gcf of 9 and 72 is 9

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8y ago

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Note that:

72 = 9 * 8

Then, since 72 contains the factor 9, one of the given numbers, the gcd is 9.

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Wiki User

12y ago
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GCF of 9 and 72 is 9.

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14y ago
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Q: What is the greatest common factor of 9 and 72?
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