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Railways R.R.C. (Patna) Solved Paper Held on 1st_Shift 23-11-2014

  • question_answer
    The difference between two positive numbers is 3. If the sum of the squares of these numbers is 369, then the sum of the numbers is?

    A) 25                                

    B) 27

    C) 33                                

    D) 81

    Correct Answer: B

    Solution :

    Suppose two positive number are x and y. Then,    x ? y = 3                      ... (1) and       \[{{x}^{2}}+{{y}^{2}}=369\]                       ... (2) On solving eqn. (1) and (2) x=15 and       y=12 Then,    sum = x + y = 15+12=27


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