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Class 10MathematicsReal NumbersHCF and LCM using prime factorisationEasyLevel 10
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What is the HCF of (18) and (24) using prime factorisation?

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Answer and explanation

Correct answer: (6)

Step 1: (18=2\times3^2) and (24=2^3\times3). Step 2: Taking the smaller powers of common prime factors gives (2\times3=6). Step 3: For HCF, take only common prime factors.

Related tags

Real-NumbersHcfPrime-Factorisation

Frequently asked questions

What is the correct answer to this question?

(6)

Why is this the correct answer?

Step 1: (18=2\times3^2) and (24=2^3\times3). Step 2: Taking the smaller powers of common prime factors gives (2\times3=6). Step 3: For HCF, take only common prime factors.

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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  1. 1If the product of two numbers is 3780 and their LCM is 315, what is their HCF?
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