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The factors of 78 are:
1, 2, 3, 6, 13, 26, 39, 78
The factors of 120 are:
1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120
The common factors are:
1, 2, 3, 6
The Greatest Common Factor:
GCF = 6
The GCF is 13.The GCF is 13.
Since 39 is a factor of 78, it is automatically the GCF.
The GCF is 6.
The GCF is 2.
The GCF is 26.
The GCF is 3.
The GCF of 78 and 30 is 6.
The GCF is 1.
The GCF is 120.