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Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-7

  • question_answer
    If \[\sqrt{{{2}^{n}}}=64,\]find out the value of n.

    A)  2                    

    B)  4

    C)  6                    

    D)  12

    Correct Answer: D

    Solution :

    \[\because \] \[\sqrt{{{2}^{n}}}=64\] \[\Rightarrow \]   \[{{2}^{n/2}}={{2}^{6}}\] \[\Rightarrow \]   \[\frac{n}{2}=6\] \[\because \]       \[n=12\]


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