If LCM of two numbers 390 and 420 is 546 - CUETMOCK

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Target Exam

CUET

Subject

General Test

Chapter

Numerical Ability

Topic

HCF and LCM

Question:

If LCM of two numbers 390 and 420 is 5460, then the HCF of two numbers is:

Options:

35

45

30

42

Correct Answer:

30

Explanation:

LCM × HCF = Product of the two numbers

5460 × HCF = 390 × 420

HCF = $\frac{390 × 420}{5460}$ = 30

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