The GCF is 1.
The GCF for 20 and 27 is 1.
The GCF is 1.
The GCF is 1.
The GCF of 15 and 27 is 3. The GCF of 15, 20 and 25 is 5. The GCF of 15, 27, 15, 20 and 25 is 1.
The GCF is 1.
The gcf of 16 and 20 is 4. The lcm of 16 and 20 is 80
The GCF is 1.
The GCF is 1.
The GCF is 1.
The GCF and LCM of 16 and 20 are 4 and 80, respectively.
3
The Greatest Common Factor (GCF) of 4, 16, and 20 is 4.