The LCM of two numbers is 840 and their

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Target Exam

CUET

Subject

General Test

Chapter

Numerical Ability

Topic

HCF and LCM

Question:

The LCM of two numbers is 840 and their HCF is 7. If one of the numbers is 56, find the other.

Options:

120

112

105

Correct Answer:

105

Explanation:

LCM of two numbers is 840 and their HCF is 7

⇒ Let the other number be x

⇒ According to the question

⇒ LCM × HCF = 56 × x

⇒ 840 × 7 = 56 × x

⇒ x = 105