Question

What is the greatest common factor of 8,18, and 70?

a) 2
b) 4
c) 6
d) 8

Answer 1

The greatest common factor of 8, 18, and 70 is 2 (option a).

Step-by-step explanation:

To find the greatest common factor of 8, 18, and 70, we need to find the largest number that divides evenly into all three numbers. We can start by finding the prime factorization of each number:

8 = 2 x 2 x 2

18 = 2 x 3 x 3

70 = 2 x 5 x 7

Now, we can find the common factors of these numbers by looking at the prime factors they have in common. The only prime factor that all three numbers share is 2. Therefore, the greatest common factor of 8, 18, and 70 is 2 (option a).