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Question

Show that the product of two numbers 60 and.84 is equal to the product of their HCF and LCM

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Solution

Prime factorisation of 60=2×2×3×5
Prime factorisation of 84=2×2×3×7
Hence, LCM of 60,84=2×2×3×5×7=420
And HCF of 60,84=2×2×3=12
Now, LCM × HCF =420×12=5040
Also, 60×84=5040
i.e., HCF × LCM = Product of the two numbers


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