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The common factors are 1 and 7. The GCF is 7.
The two common factors are: 1, 7
The factors of 7 are 1, 7 The factors of 25 are 1, 5, 25 → The common factor(s) of 7 and 25 is (are): 1 → greatest common factor is 1.
The factors of 26 are:1, 2, 13, 26The factors of 42 are:1, 2, 3, 6, 7, 14, 21, 42The Greatest Common Factor:GCF = 2
The Greatest Common Factor (GCF) is: 7