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Question

Find the HCF and LCM of 306and 657 by prime factorization method.


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Solution

Step 1: Find HCF of the given numbers

Given numbers, 306and 657

Prime Factorization of 306=2×3×3×17

Prime Factorization of 657=3×3×73

HCF =3×3=9

Step 2: Find LCM

We know that, Product of two numbers = LCM×HCF

Let, the LCM be x.

H.C.F ×x=306×657

9×x=306×657

x=306×6579

x=22338

Hence, HCF and LCM are 9 and 22338 respectively.


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