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SSC Sample Paper SSC CGL - Sample Paper-26

  • question_answer
    The value of \[\sqrt{{{(12.1)}^{2}}-{{(8.1)}^{2}}\div [{{(0.25)}^{2}}+(0.25)(19.95)}\]is

    A) 1                                 

    B) 2

    C) 3                                 

    D) 4

    Correct Answer: D

    Solution :

    \[\sqrt{\frac{{{(12.1)}^{2}}{{(8.1)}^{2}}}{{{(0.25)}^{2}}+(0.25)(19.95)}}\] \[=\sqrt{\frac{(12.1-8.1)(12.1+8.1)}{(0.25)(0.25+19.95)}}\]             \[=\sqrt{\frac{4.\times 20.2}{0.25\times 20.2}}=\sqrt{\frac{4}{0.25}}=\sqrt{\frac{400}{25}}\]             \[=\sqrt{16}=4\]


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