Because 18 is the largest number that divides evenly into both 72 and 90.
The Greatest Common Factor is 18
The greatest common factor of the numbers 18, 30 and 72 is 6.
The greatest common factor of 54 and 72 is 18.
The greatest common factor is 18.
It is: 18
Since 18 is a factor of 72, it is automatically the GCF.
The GCF is 18.
It is 18
The GCF is 18.
The GCF is 18.
The GCF of 18, 60, and 72 is 6.
It is: 18