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Railways RRB (Assistant Loco Pilot & Technician) Solved Paper-2 (2013)

  • question_answer
    If \[{{(41)}^{2}}\] is added to the square of a number, the answer so obtained is 7457. What is the number?

    A)  76       

    B)  63       

    C)  81        

    D)  82

    Correct Answer: A

    Solution :

    Let the required number be x. Therefore, \[{{x}^{2}}+{{(41)}^{2}}=7457\] \[\Rightarrow \] \[{{x}^{2}}=7457-1681\] \[=5776\] \[\Rightarrow \] \[x=76\]


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