1
Since 27 is a factor of 81, it is automatically the GCF.
The GCF is 3.
27(3 + 1)
The GCF is 3.
They only have one common factor: 1
1
1
To find the greatest common factor of two numbers, you first need to split them into their prime factors. In this case, 20 and 27 can be broken down as follows: 20 = 2x2x5 27 = 3x3x3 The next step would be to identify any common factors. In this case there are none. Thus the greatest common factor of 20 and 27 is 1.
The GCF is 1.
The GCF is 1.
The GCF is 1.