Question

What’s the highest common factor of 36 and 45?

Answer 1

9

Let's view the list of factors 36 and 45 have, starting with 36

• 1, 2, 3, 4, 6, 9, 12, 18, 36
• 1, 3, 5, 9, 15, 45

4 × 9 = 36

5 × 9 = 45

That said, the greatest common factor of 36 and 45 is 9