Class 6 Maths Chapter 5 MCQs

1. A prime number has:
A. One factor
B. Two factors
C. Three factors
D. Four factors
Answer: B

2. Which of the following is a prime number?
A. 15
B. 21
C. 29
D. 35
Answer: C

3. Which of the following is a composite number?
A. 7
B. 13
C. 18
D. 19
Answer: C

4. The smallest prime number is:
A. 1
B. 2
C. 3
D. 5
Answer: B

5. Which number is neither prime nor composite?
A. 0
B. 1
C. 2
D. 3
Answer: B

6. The prime factors of 12 are:
A. 2 × 2 × 3
B. 3 × 4
C. 6 × 2
D. 1 × 12
Answer: A

7. Which of the following is divisible by both 2 and 5?
A. 15
B. 20
C. 25
D. 35
Answer: B

8. The HCF of 12 and 18 is:
A. 2
B. 3
C. 6
D. 9
Answer: C

9. The LCM of 4 and 6 is:
A. 8
B. 10
C. 12
D. 24
Answer: C

10. Which of the following is a factor of 36?
A. 5
B. 7
C. 9
D. 11
Answer: C

11. Which number has exactly three factors?
A. 4
B. 5
C. 7
D. 11
Answer: A

12. Which of the following is NOT a multiple of 8?
A. 16
B. 24
C. 30
D. 40
Answer: C

13. Which of the following is a common factor of 16 and 24?
A. 3
B. 5
C. 8
D. 10
Answer: C

14. Prime factorization is used to find:
A. HCF and LCM
B. Area only
C. Perimeter only
D. Angles only
Answer: A

15. Which of the following is the LCM of 3, 4 and 6?
A. 6
B. 9
C. 12
D. 24
Answer: C