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The Greatest Common Factor (GCF) is: 6

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Q: What is the greatest common factor of 18 and30?
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What is the greatest common factor of 18 and30 and 54?

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What is greatest common factor of 18 and 126?

The greatest common factor is 18.


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The greatest common factor of 18 and 55 is 1.


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Since 18 is a factor of 90 and it is the largest factor of itself, the greatest common factor of 18 and 90 is 18.Since 18 is a factor of 90, it is automatically the GCF.


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