The GCF of consecutive integers is 1.
Their product.
Yes.
Since 13 is a factor of 39, it is automatically the GCF.
The LCM is 156.
Since they have no common prime factors, their GCF is 1 and their LCD (LCM) is their product, 143.
The GCF is 12.The GCF is 12.
GCF of 12 and 12 is 12.
The GCF is 12.
The GCF is 12.
GCF=12
The GCF is... 12
The GCF is 12.