1 is the greatest common factor...something else that they have in common is that they are all two digit numbers.
The GCF is 1.
The greatest common factor (GCF) of 20 and 30 is 10.
The greatest common factor of 30 and 39 is 3.
30 is a factor of 150 so 30 is the greatest common factor of 30 and 150
The greatest common factor of 30 , 60 = 30
The greatest common factor of 30 , 50 = 10
The greatest common factor of 7 and 30 is 1.
The Greatest Common Factor of 30, 70: 10
What is the greatest common factor shared by 100 and 30?
The Greatest Common Factor of 30, 40: 10
17 is prime so its factors are 1 and 17. 17 is neither a factor of 15 nor 30, so the GCF is 1.