The GCF is 3.
The GCF is 3.
The GCF is 3.
The GCF is 1.
The GCF is 3.
The GCF is 3.
The gcf of 6, 15, and 21 is 3. But once you throw that 19 in there, it's ' 1 '.
The GCF of 3, 15, and 21 is 3.
The GCF is 3.
The LCM of 7 and 15 is 105. The GCF of 7 and 15 is 1.
The answer is 3
It is 3