Free Test LCM & HCF – General...

Q1: What is the LCM of 4 and 5?

A. 10 B. 20 C. 15 D. 25

Q2: HCF of 18 and 24 is:

A. 3 B. 6 C. 12 D. 2

Q3: LCM of two numbers is 60 and their HCF is 5. If one number is 15, the other is?

A. 20 B. 25 C. 10 D. 30

Q4: What is the HCF of 48 and 180?

A. 6 B. 12 C. 24 D. 36

Q5: The smallest number divisible by both 6 and 8 is:

A. 12 B. 24 C. 36 D. 48

Q6: Which of these is a common multiple of 3 and 7?

A. 10 B. 14 C. 21 D. 24

Q7: HCF of 9, 27 and 81 is:

A. 9 B. 3 C. 1 D. 27

Q8: LCM of 10 and 15 is:

A. 20 B. 25 C. 30 D. 45

Q9: Two numbers have LCM 36 and HCF 6. One number is 12. Find the other.

A. 15 B. 18 C. 24 D. 30

Q10: Which of these is a common factor of 24 and 60?

A. 4 B. 6 C. 8 D. All of these

Q11: HCF of 13 and 17 is:

A. 1 B. 13 C. 17 D. 0

Q12: LCM of 7, 14 and 21 is:

A. 42 B. 84 C. 98 D. 70

Q13: Which of the following pairs is co-prime?

A. 8 and 15 B. 12 and 18 C. 14 and 49 D. 10 and 20

Q14: Find LCM of 9, 12 and 18.

A. 36 B. 72 C. 54 D. 90

Q15: HCF of 0 and 5 is:

A. 0 B. 1 C. 5 D. Undefined

Q16: What is the LCM of 2, 3, and 5?

A. 15 B. 30 C. 60 D. 10

Q17: The least number divisible by 9, 12, and 15 is:

A. 60 B. 90 C. 120 D. 180

Q18: What is the HCF of 36, 60 and 24?

A. 6 B. 12 C. 18 D. 24

Q19: The product of two numbers is 2210 and their HCF is 17. What is their LCM?

A. 130 B. 221 C. 2210 D. 17

Q20: If two numbers are co-prime, their LCM is equal to:

A. Their product B. 1 C. Sum of numbers D. Difference of numbers

Quiz for LCM & HCF