3
12 = 2^2 x 3
21 = 3 x 7
30 = 2 x 3 x 5
hcf = 3
The GCF is 3.
The GCF is 3.
The GCF is 3.
The GCF is 3.
16 and 21
The GCF is 6.
The GCF is 3.
The GCF is 3.
The GCF is: 3
The GCF of the numbers 6, 12, and 30 is the number 6.
The GCF is 3.
The GCF is 6.