The factors of 16 are:
1, 2, 4, 8, 16
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 are:
1, 2
The Greatest Common Factor (GCF) is:
2
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The GCF of 18 and 42 is 6. The GCF of 42 and 56 is 14.
The greatest common factor of 18 21 and 42 is 3.
The GCF is 6
It can be and is. Since 16 is not a factor of 42, the GCF will have to be a factor of 16 that is less than 16.
The GCF of 18, 54, and 72 is 18.The GCF is 18.