all the factors are
14:1, 2, 7, 14
21:1, 3, 7, 21
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The factors of 14 and 21 are: 14: 1,2,7,14 21:1,3,7,21 The common factors are:1 and 7. Therefore 7 is the greatest common factor (GCF)
The GCF of 14 and 21 is 7. The factors of 14 are: 1, 2, 7, 14 The factors of 21 are: 1, 3, 7, 21 The common factors are: 1, 7.
The factors of 42 are: 1, 2, 3, 6, 7, 14, 21, 42.
2, 3, 6, 7, 14, 21
The factors for 42 are 1,2,3,6,7,14,21,42.