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The factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30.

The factors of 18 are 1, 2, 3, 6, 9, and 18.

The factors that are on both lists ... the "common" factors ... are 1, 2, 3, and 6 .

The greatest one of those is 6 .

Why do I have this nagging feeling that you're not completely sure of

what "GCF" stands for, or how to go about finding it ?

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13y ago
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Wiki User

9y ago

Because 6 is the largest positive integer that divides evenly into both 18 and 30 with no remainder.

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Q: Why 6 is the GCF of 30 and 18?
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Related questions

What is the GCF of 30-18?

The GCF is 6.


What is the GCF of 18 66 and 30?

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Is 6 the GCF of 30 and 18?

6 is the GCF of 30 and 18.


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The GCF is 6.


What is the GCF of 30 an 18?

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The greatest common factor of 18, 30, and 42 is 2.


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The greatest common factor of 18, 30 and 36 is 6


What is the greatest common factor of 30 and 18 cm?

GCF(30, 18) = 6.


What is the greatest common factor 18 of 30?

Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30Factors of 18: 1, 2, 3, 6, 9, 18GCF (30, 18) = 6


What are the greatest common factor and least common multiple of 18 and 30?

The GCF and LCM of 18 and 30 are 6 and 90, respectively.