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Maths / Real Numbers / HCF and LCM Using Prime Factorisation
QUESTION
 

Find the HCF and LCM of 90 and 144 by prime factorization method.

EXPLANATION
Explain TypeExplanation Content
Text

Rightarrow ;90=2times3times3times5

90=2times3^{2}times5

And 144=2times2times2times2times3times3

         144=2^{4}times3^{2}

HCF =2times3^{2}times5^{0}

        =2times9times1

        =18

LCM =2^{4}times3^{2}times5^{1}

        =16times9times5

        =16times45

        =720

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