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Subjects
Class 10MathematicsReal NumbersHCF and LCM using prime factorisationEasyLevel 11

What is the HCF of (27), (54), and (81)?

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Answer and explanation

Correct answer: (27)

Step 1: (27=3^3), (54=2\times3^3), and (81=3^4). Step 2: The common prime factor is (3), and the smallest power is (3^3). Step 3: (3^3=27), so the HCF is (27).

Tags

real-numbershcfthree-numbers

Frequently asked questions

What is the correct answer to this question?

(27)

Why is this the correct answer?

Step 1: (27=3^3), (54=2\times3^3), and (81=3^4). Step 2: The common prime factor is (3), and the smallest power is (3^3). Step 3: (3^3=27), so the HCF is (27).

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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