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Railways R.R.C. (Jabalpur) Solved Paper Held on 2nd Shift 9-11-2014

  • question_answer
    \[{{(47)}^{2}}-{{(?)}^{2}}=3563-2055\]

    A) 16                    

    B) 28

    C) 36                                

    D) 42

    Correct Answer: A

    Solution :

    \[{{(42)}^{2}}-{{(?)}^{2}}=3563-2055\] \[{{?}^{2}}=1764-3563+2055=256\] \[?=16\] ?2 = 1764-3563+2055=256 ? = 16


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