The HCF of two numbers is 21 and their L

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Target Exam

CUET

Subject

General Test

Chapter

Numerical Ability

Topic

HCF and LCM

Question:

The HCF of two numbers is 21 and their LCM is 840 . If one of the numbers is 49 , then the other number is:

Options:

650

540

810

360

Correct Answer:

360

Explanation:

LCM of two numbers is 840 and their HCF is 21

⇒ Let the other number be x

⇒ According to the question

⇒ LCM × HCF = 49 × x

⇒ 840 × 21 = 49 × x

⇒ x = 360