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The factors of 9 are:

1, 3, 9

The factors of 13 are:

1, 13

The Greatest Common Factor (GCF) is:

1

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11y ago
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Wiki User

9y ago

The greatest common factor of 9, 12, and 21 is 3.

3 x 3 = 9
3 x 4 = 12
3 x 7 = 21

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Wiki User

8y ago

The GCF is 3.

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Wiki User

9y ago

The GCF is 3.

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Wiki User

8y ago

The GCF is 3.

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Wiki User

6y ago

The GCF is 3.

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Wiki User

12y ago

3

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Wiki User

7y ago

It is: 3

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Q: Find the GCF of 9 and 12?
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