The GCF is 5.
5
Since 2 is a factor of 20, it is automatically the GCF.
Since 2 is a factor of 20, it is automatically the GCF.
The greatest common factor of 12 and 20 is 4.
20 and 24's highest common factor is four.
The GCF is 5.
The GCF is 1.
5
5
5
The GCF is 10.
The GCF is 5.