3 is.
I think you mean the greatest common factor, the greatest common factor is 3.
The factors of 12 are 1, 2, 3, 4, 6, and 12. The factors of 27 are 1, 3, 9, and 27. The common factors of 12 and 27 are 1 and 3. Therefore, the least common factor (the smallest common factor) is 1.
Common factors of 12 and 27 are: 1 and 3.
3
3
3
3
The GCF is 3.
The greatest common factor (GCF) is often also called the greatest common divisor (GCD) or highest common factor (HCF). Keep in mind that these different terms all refer to the same thing: the largest integer which evenly divides two or more numbers. The greatest common factor of 12 and 27 is 3
The GCF is 3
The GCF is 1.