Factors of 42: 1, 2, 3, 6, 7, 14, 21, 42
Factors of 36: 1, 2, 3, 4, 6, 9, 12, 18, 36
Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30
gcf(42,36,30) = 6
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They have a greatest common factor of 6. 30/6 = 5 and 36/6 = 6. So the answer is 5/6
The Greatest Common Factor of 36 and 120 (GCF) is: 12
The Greatest Common Factor (GCF) is: 36
It is 36
The GCF is 3.