Well, honey, the Greatest Common Factor (GCF) for 15, 60, and 120 is 15. You see, it's the largest number that divides evenly into all three numbers. So, grab your calculator and check it out if you don't believe me.
The GCF of 45, 60 and 120 is 15.
The greatest common factor of 60 and 120 is 60.
The GCF is 15.
GCF = 60 2 x 60 = 120 3 x 60 = 180
The GCF is 60.
The GCF is 12.
Since 60 is a factor of 120, it is automatically the GCF.
The greatest common factor (GCF) of 120 and 135 is 15.
Since 15 is a factor of 120, it is automatically the GCF.
The GCF of 120 and 300 is 60.
The GCF of 60, 96, and 120 is 12.
It is not possible to give a sensible answer to this question. The greatest common factor (GCF) refers to a factor that is COMMON to two or more numbers. You have only one number in the question!