Multiple Choice Questions on If logx 9 16 1 2 then x is equal to ........ for CDS Exam Preparation

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Multiple Choice Questions

If logx 9 16 1 2 then x is equal to ........

Quantitative Aptitude (CDS) Logarithm
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    If logx(9/16)=-1/2, then x is equal to

    -3/4

    Incorrect Answer

    3/4

    Incorrect Answer

    81/256

    Incorrect Answer

    256/81

    Correct Answer
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    Explanation:

    logx(9/16)=-1/2

    =>   x-1/2=9/16
    =>   1/\sqrt{x}=9/16
    =>   \sqrt{x} =16/9
    =>    x=(16/9)2
    =>    256/81

    By: Munesh Kumari
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