1
It is: 1
The Highest Common Factor is: 9
The Highest Common Factor is 18
The highest common factor is 9
The Greatest Common Factor (GCF) is: 9
9.
It is: 9
Nine is the highest common factor of 81 and 9
The highest common factor of 17 and 9 is 1
The GCF is 9.
It is: 9
The highest common factor of 9 and 30 is 3.