1.
The factors of 9 are 1, 3, and 9.
9 is not a factor of 100. Neither is 3.
So the greatest common factor between 9 and 100 is 1.
The GCF of all the composite numbers under 100 is 1. For e.g 4 & 9 are composite numbers & their GCF is 1, so if we take other composite numbers along with 4 & 9 the GCF will be 1.
The GCF of 16 and 72 is 8. 16/72 can be reduced to 2/9
The GCF is 100.
The GCF is 9.
The GCF is 1.
The GCF is 100.
The GCF is 9.
The GCF is 9.
The GCF is 9.
4. 36/4 = 9 = 3 x 3 100/4 = 25 = 5 x 5
The GCF is 5.
The GCF is 9.