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To find the greatest common factor (GCF) of 18 and 42, we can list the factors of each number and find the largest one they have in common: The factors of 18 are: 1, 2, 3, 6, 9, 18 The factors of 42 are: 1, 2, 3, 6, 7, 14, 21, 42 The common factors of 18 and 42 are: 1, 2, 3, and 6. The greatest commRead more

To find the greatest common factor (GCF) of 18 and 42, we can list the factors of each number and find the largest one they have in common:

The factors of 18 are: 1, 2, 3, 6, 9, 18 The factors of 42 are: 1, 2, 3, 6, 7, 14, 21, 42

The common factors of 18 and 42 are: 1, 2, 3, and 6.

The greatest common factor of 18 and 42 is 6, since it is the largest factor they have in common.

Therefore, the GCF of 18 and 42 is 6.

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