The GCF is 2.
The GCF is 2.
The GCF of 20 and 66 is 2. The prime factorization of 20 is 2*2*2 The prime factorization of 66 is 2*3*11 Their only common factor is 2, so it is their GCF.
The GCF is 66.
The GCF of 30 and 66 is 6.
The GCF is: 6.
The GCF is 6.
The GCF is 3.
The GCF is 1.
The GCF is 66.
The GCF is 6.
The GCF is 1.
The GCF is 3.