Question

Find the greatest common factor (GCF) of 78 and 86.
1) 1
2) 2
3) 3
4) 86

Answer 1

The greatest common factor (GCF) of 78 and 86 is 2.Correct option is 2.

Step-by-step explanation:

greatest common factor (GCF) of 78 and 86, we need to find the largest number that divides both 78 and 86 evenly without any remainder. We can find the GCF by determining the prime factors of each number and then finding the highest common factor.

The prime factors of 78 are 2 x 3 x 13, while the prime factors of 86 are 2 x 43. The common factors of 78 and 86 are 2. Therefore, the GCF of 78 and 86 is 2.