Railways R.R.C. (Mumbai) Solved Paper Held on 17-11-2013

  • question_answer
    \[\frac{\sqrt{24}+\sqrt{216}}{\sqrt{96}}=?\]

    A) 2                     

    B) \[2\sqrt{4}\]

    C) \[6\sqrt{2}\]      

    D)   \[\sqrt{6}\]

    Correct Answer: A

    Solution :

    \[\frac{\sqrt{24}+\sqrt{216}}{\sqrt{96}}=\frac{\sqrt{4\times 6}+\sqrt{6\times 6\times 6}}{\sqrt{16\times 6}}\]                         \[=\frac{2\sqrt{6}+6\sqrt{6}}{4\sqrt{6}}\]                         \[=\frac{8\sqrt{6}}{4\sqrt{6}}\] \[\frac{=4\times 2\sqrt{6}}{4\sqrt{6}}=2\]


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