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Class 10MathematicsReal NumbersHCF and LCM using prime factorisationExpertLevel 10
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The HCF of two numbers is (27) and their LCM is (1701). If one number is (189), what is the other number?

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Answer and explanation

Correct answer: (243)

Step 1: Product of two numbers equals HCF times LCM. Step 2: The other number is (\frac{27\times1701}{189}=243). Step 3: Notice (189=27\times7) to simplify quickly.

Related tags

Real-NumbersHcf-LcmUnknown-Number

Frequently asked questions

What is the correct answer to this question?

(243)

Why is this the correct answer?

Step 1: Product of two numbers equals HCF times LCM. Step 2: The other number is (\frac{27\times1701}{189}=243). Step 3: Notice (189=27\times7) to simplify quickly.

Which subject and chapter does this question cover?

This is a Class 10 Mathematics question. Chapter: Real Numbers. Topic: HCF and LCM using prime factorisation.

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