2. Solved Papers
  3. Railways

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

  • question_answer
    \[If\,\,x+y=15,\] then\[{{(x-10)}^{3}}+{{(y-5)}^{3}}\]is__

    A) 25                                

    B) 125

    C) 625                              

    D) 0

    Correct Answer: D

    Solution :

    If \[x+y=15\]               \[y=15-x\] \[\therefore {{(x-10)}^{3}}+{{(15-x-5)}^{3}}\] \[={{(x-10)}^{3}}+{{(10-x)}^{3}}\] \[=0\]


You need to login to perform this action.
You will be redirected in 3 sec spinner