'12'
Becasue
12 x 11 = 132
12 x 12 = 144
The GCF is 12.
The GCF is 12.
The GCF is 12.
The GCF is 27.
The Greatest Common Factor of 48, 120 and 144 is 24.
The GCF is 132.
The GCF is 4.
The GCF is 12.
The GCF is 12.
The GCF is 4.
The GCF is 12.
The GCF is 3.