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Rajan@2021
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Using prime factorisation, find the HCF and LCM of 30, 72 and 432.

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One of the most important and exam oriented question from real numbers chapter in which we have given three numbers 30, 72 and 432 and we have to find the HCF and LCM of the given numbers by using the method of prime factorization.

Kindly give me a detailed solution of this question

RS Aggarwal, Class 10, chapter 1B, question no 2(v)

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1 Answer

  1. 30=2×3×5=××

    72=×=×
    432=24×33=2^4×
    From the above
    HCF=×=6
    LCM=2^4××=2160

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