Example: 30 and 42
Factor them.
2 x 3 x 5 = 30
2 x 3 x 7 = 42
Select the common factors.
2 x 3 = 6, the GCF
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The GCF of 3, 36, and 51 is 3.Math:3 - 1, 336 - 1, 2, 3, 4, 6, 9, 12, 18, 3651 - 1, 3, 17, 51
The GCF is 1.
The GCF is: 1
The GCF is 1.
Since 36 is a factor of 144, it is automatically the GCF.