The GCF of 18, 27, and 78 is 3.
18=2*3*3
27=3*3*3
78=2*3*13
GCF=3
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27 and 18
the greatest common factor for 27 and 32 is 1
The greatest common factor of 27 and 35 is 1
The greatest common factor of 75 and 27 is 3.
The greatest common factor (GCF) of 27 and 33 is 3