It is: 1
The GCF is 1.
The GCF is 4.
The GCF is 1.
The GCF is 1.
The GCF is 1.
The GCF of 44 and 88 is 44. Since 44 is a factor of 88, it is automatically the GCF.
The GCF is 4.
The GCF is 1.
GCF(72, 44) = 4.
The GCF is 1.
The GCF is 2.
The GCF is 44.