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10 = 2 * 5
4 = 2 * 2
So the greatest common factor is 2.
The GCF is 2.
The Greatest Common Factor of 16, 36: 4
12
7
4
The GCF is 24.
The GCF is 3.
The GCF is 6.
The GCF is 1.
6 I believe.