Question

Find HCF AND LCM of 672 and 120 by prime factorization method

Answer 1

By prime factorisation method -:

672 = 1×2×2×2×2×2×3×7

120= 1×2×2×2×3×5

therefore,

HCF (672,120) = 1×2×2×2×2×3 = 48

LCM (672,120) = 48× 2×2×7×5 = 6720

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