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The GCF is 9.
9 is.
It is: 9
The GCF is 45.
The GCF is 12.
The GCF is 20.
The GCF is 4.
The GCF is 10.
The GCF is 60.
The GCF is 180.
The greatest common factor of the numbers 180 and 150 is 30.