The greatest common factor of the numbers 30, 84 and 126 is 6.
The GCF is 6.
The GCF of 30 and 84 is 6. The GCF of 126 and 12 is also 6.
The GCF is 21.
The GCF of 63, 84 and 126 is 21. The GCF of 6384 and 126 is 42.
The GCF is 6.
The GCF of 84, 126 and 294 is 42.
The GCF is 21.
The GCF is 21.
The GCF is 21.
The GCF is 42.
The GCF is 6.