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SSC Sample Paper SSC CGL - Sample Paper-25

  • question_answer
    Three fifth of the square of a certain number is 126.15.What is the number?

    A) 210.25             

    B) 75.69

    C) 14.5                 

    D) 145

    Correct Answer: C

    Solution :

    Let the number be x. \[\therefore \]      \[\frac{3}{5}{{x}^{2}}=126.15\] \[\Rightarrow \]   \[{{x}^{2}}=\frac{126.15\times 5}{3}=210.25\] \[\Rightarrow \]   \[x=\sqrt{210.25}=14.5\]          


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