The greatest common factor of 18 21 and 42 is 3.
The Greatest Common Factor of 9, 18, 21: 3
The greatest common factor of 18 and 21 is 3.
3.
3
The Greatest Common Factor (GCF) is: 3
The GCF is 3.
3
The GCF is 3.
The GCF of 3, 21, and 18 is 3.
The GCF of 18, 21, and 54 is 3.
The GCF is 1.
The GCF is 3.