0
Anonymous
The GCF of 18, 54, and 72 is 18.The GCF is 18.
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6
The greatest common factor of 18 21 and 42 is 3.
If you mean 18, 42 and 36 then the GCF is 6
It is: 6
The greatest common factor of 39, 42, and 72 is 3