Subject

    Quantitative Aptitude

    Topic

    Power & Logarithm

    What should come in place of both x in the equation x/√128 = √162/x.

    ক)
    12
    খ)
    14
    গ)
    144
    ঘ)
    196

    Explanation

    Let x/√128 = √162/x Then x 2 = √(128 x 162) = √(64 x 2 x 18 x 9) = √(8 2 x 6 2 x 3 2 ) = 8 x 6 x 3 = 144. So, x = √144 = 12.

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