Multiple Choice Questions on If ax by cz and abc 1 then the value of 1 x 1 y 1 z will be equal to ........ for CDS Exam Preparation

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Multiple Choice Questions

If ax by cz and abc 1 then the value of 1 x 1 y 1 z will be equal to ........

Quantitative Aptitude (CDS) Simplification
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    If  ax = by = cz and abc = 1, then the value of  1/x  +  1/y+   1/z will be equal to

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    Explanation:

    let ax+by+cz= k

    ax= k , a = k1/x

    similarly b = k1/y and c = k1/z

    abc = k1/xk1/yk1/z

    1 = k(1/x+1/y+1/x)

    ko = k1/x+1/y+1/z

    1/x+1/y+1/z = 0.

    By: Munesh Kumari
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