The GCF is 1.
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The GCF is 7.
The GCF of 18 and 42 is 6. The GCF of 42 and 56 is 14.
The GCF is 7.
The GCF is 1.
Alright, honey, let's cut to the chase. The Greatest Common Factor (GCF) of 14, 35, and 56 is 7. Why? Because 7 is the largest number that divides evenly into all three of those numbers. So, there you have it, 7 is the magic number in this little math party.