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SSC Sample Paper SSC CGL - Sample Paper-6

  • question_answer
    The value of \[\sqrt{\frac{{{(12.1)}^{2}}-{{(8.1)}^{2}}}{{{(0.25)}^{2}}+(0.25)(19.25)}}\] is

    A)  1                                

    B)  2

    C)  3                                

    D)  4

    Correct Answer: D

    Solution :

    \[\sqrt{\frac{{{(121)}^{2}}-{{(8.1)}^{2}}}{{{(0.25)}^{2}}+(0.25)(19.95)}}\] \[=\sqrt{\frac{(121-8.1)(121+8.1)}{(0.25)(0.25+19.95)}}\] \[=\sqrt{\frac{4\times 20.2}{0.25\times 20.2}}=\sqrt{\frac{4}{0.25}=\sqrt{\frac{400}{25}}}\] \[=\sqrt{16}=4\]


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