The GCF of 12, 15, 18, and 30 is 3.
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The factors of 12 are:1, 2, 3, 4, 6, 12The factors of 15 are:1, 3, 5, 15The factors of 35 are:1, 5, 7, 35The Greatest Common Factor (GCF) is:1The GCF is 1.
The Greatest Common Factor (GCF) is: 15
The greatest common factor for 15 and 16 is 1.
The greatest common factor of 15 and 32 is 1
The greatest common factor of 15 and 55 is 5.