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The GCF of 9, 15, and 18 is 3.

The prime factorization of 9 is 3*3.

The prime factorization of 15 is 3*5

The prime factorization of 18 is 2*3*3

So the greatest common factor is 3.

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Wiki User

6y ago
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Wiki User

6y ago

The greatest common factor (GCF) refers to a factor that is COMMON to two or more numbers. You have only one number in the question! The greatest factor of any number is itself.

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Evelyn Mayo Guzman

Lvl 2
1y ago

the greatest common factor is 3

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Wiki User

14y ago

The greatest common factor is 3.

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Wiki User

13y ago

gcf of 9 15 and 18 is 3.

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Q: What is the greatest common factor of 15 9 and 18?
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