Mathematics · Real Numbers · NCERT Examples

Example 2

A complete, independently verified solution for NCERT Example 2.

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Mathematics · Chapter 1 · NCERT Examples

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NCERT Example

Example 2

HCF · LCM · prime factorisation

Find the LCM and HCF of 6 and 20 by the prime factorisation method.

Solution

6=2×3,20=22×56=2\times3,\qquad20=2^2\times5
HCF⁡(6,20)=2\operatorname{HCF}(6,20)=2
LCM⁡(6,20)=22×3×5=60\operatorname{LCM}(6,20)=2^2\times3\times5=60

Final answer

HCF = 2 and LCM = 60.

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