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You need at least two numbers to find something in common. If that's 12 and 15, the answer is 3.

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Q: What is the greatest common factor of 1215?
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What is the greatest common factor of 45 and 1215?

The GCF is 45.


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The greatest common factor of 32 and 24?

The Greatest Common Factor (GCF) is: 8


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The greatest common factor of 42 and 12 is 6.


Is the greatest common factor how many of each type?

No. The Greatest Common Factor (GCF) is the greatest factor that is in common with the numbers you are given.


24 is the greatest common factor of what number?

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