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Railways Sample Paper RRB (Group D) Sample Test Paper-1

  • question_answer
    In the following question, select the missing number from the given series.
    49 169 484
    81 144 625
    16 25 ?

    A)  37                   

    B)  47

    C)  48                   

    D)  25

    Correct Answer: B

    Solution :

    [b]  \[\begin{matrix}    \sqrt{49}=7 & \sqrt{169}=13 & \sqrt{484}=22  \\    \sqrt{81}=\frac{+9}{16} & \sqrt{144}=\frac{+12}{25} & \sqrt{625=\frac{+25}{47}}  \\ \end{matrix}\] So, Answer is 47.                    


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