HCF (Highest Common Factor) and LCM (Least Common Multiple) are important concepts in mathematics. They are frequently tested in Olympiad exams to assess students' problem-solving abilities. Here is a sample test for Class 6 students to practice their skills in HCF and LCM.



1. This test consists of multiple-choice questions.
2. Choose the correct option for each question.
3. Each question carries one mark.
4. There is no negative marking for incorrect answers.
5. Total marks for the test: 10.



1. Find the HCF of 12 and 18.
a) 2
b) 3
c) 6
d) 12

2. Find the LCM of 4 and 6.
a) 4
b) 6
c) 12
d) 24

3. Find the HCF of 24 and 36.
a) 2
b) 3
c) 6
d) 12

4. Find the LCM of 8 and 12.
a) 8
b) 12
c) 24
d) 48

5. Find the HCF of 15 and 25.
a) 1
b) 5
c) 10
d) 15

6. Find the LCM of 9 and 15.
a) 9
b) 15
c) 45
d) 135

7. Find the HCF of 36, 48, and 72.
a) 6
b) 12
c) 24
d) 36

8. Find the LCM of 16, 24, and 32.
a) 16
b) 48
c) 64
d) 96

9. Find the HCF of 28 and 42.
a) 2
b) 6
c) 14
d) 28

10. Find the LCM of 10, 12, and 15.
a) 10
b) 30
c) 60
d) 120



1. b) 3
2. c) 12
3. b) 3
4. c) 24
5. b) 5
6. c) 45
7. c) 24
8. b) 48
9. c) 14
10. c) 60

Practice these questions to enhance your understanding of HCF and LCM. Good luck with your Olympiad preparation!