Greatest Common Factor and Least Common Multiple MCQ Test 1

1. Which number is a multiple of both 3 and 5?

2. What is the greatest common factor of 12 and 15?

3. Which of the following is the correct formula for LCM of two numbers?

4. Which prime number is a factor of every number?

5. What is the least common multiple of 6, 8, and 10?

6. Which of the following is not related to GCF?

7. If the LCM of two numbers is 180 and their GCF is 15, what are the numbers?

8. What is the LCM of the first ten natural numbers?

9. If GCF of two numbers is 5 and one number is 15, what is the other number?

10. What is the GCF of 24 and 36?

11. Given the LCM of two numbers is 210 and one of them is 30, find the other number.

12. What is the greatest common factor of 8 and 12?

13. Determine the GCF of 144 and 256.

14. Find the GCF of 405, 567, and 729.

15. If LCM of two numbers is 72 and one number is 9, what is the other number?

16. What does LCM stand for?

17. Which pair of numbers has a greatest common factor of 6?

18. What is the LCM of 5, 7, and 9?

19. What is the GCF of 99 and 121?

20. Which of the following numbers is a multiple of both 4 and 6?