Aptitude & Reasoning · Question Set

HCF–LCM & Factors – Aptitude & Reasoning interview questions

HCF–LCM & Factors interview questions for placements and exams.

Subject: Aptitude & ReasoningDifficulty: Mixed14 questions in this set

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Aptitude & Reasoning – HCF–LCM & Factors questions (14)

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1. Which consecutive pair has LCM equal to 210?

Difficulty: MediumType: MCQTopic: perm no repeat

Consecutive numbers are co-prime; LCM is their product. 14×15 = 210. Other pairs yield products not equal to 210.

Example code

LCM(14,15) = 14×15 = 210

2. Find the HCF of 1.8 and 2.4.

Difficulty: Easy

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HCF–LCM & Factors – Aptitude & Reasoning interview questions

Set overview

Aptitude & Reasoning – HCF–LCM & Factors questions (14)

1. Which consecutive pair has LCM equal to 210?

2. Find the HCF of 1.8 and 2.4.

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3. The product of two numbers is 630 and their HCF is 9. What is their LCM?

4. Smallest number to be added to 1000 to make it divisible by 18 is:

5. Find the least number which when divided by 4, 5 and 6 leaves a remainder 3.

6. Greatest number that divides 130 and 175 leaving the same remainder is:

7. Find the least number which when divided by 12, 18 and 21 leaves a remainder 7 in each case.

8. For positive integers a and b with HCF = h and LCM = l, which identity always holds?

9. Find the HCF (GCD) of 84 and 210.

10. Find the HCF of 96, 144 and 240.

11. Find the LCM of the fractions 3/20 and 7/15.

12. Find the LCM of 18, 24 and 30.

13. HCF and LCM of two numbers are 13 and 455. If one number is 91, find the other.

14. How many integers from 1 to 1000 are multiples of 6 or 8?

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HCF–LCM & Factors – Aptitude & Reasoning interview questions

Set overview

1. Which consecutive pair has LCM equal to 210?

2. Find the HCF of 1.8 and 2.4.

Continue your preparation

3. The product of two numbers is 630 and their HCF is 9. What is their LCM?

4. Smallest number to be added to 1000 to make it divisible by 18 is:

5. Find the least number which when divided by 4, 5 and 6 leaves a remainder 3.

6. Greatest number that divides 130 and 175 leaving the same remainder is:

7. Find the least number which when divided by 12, 18 and 21 leaves a remainder 7 in each case.

8. For positive integers a and b with HCF = h and LCM = l, which identity always holds?

9. Find the HCF (GCD) of 84 and 210.

10. Find the HCF of 96, 144 and 240.

11. Find the LCM of the fractions 3/20 and 7/15.

12. Find the LCM of 18, 24 and 30.

13. HCF and LCM of two numbers are 13 and 455. If one number is 91, find the other.

14. How many integers from 1 to 1000 are multiples of 6 or 8?

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