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12th Class Mathematics Sample Paper Mathematics Olympiad - Sample Paper-4

  • question_answer
    The income of Raj on the \[{{n}^{th}}\] day is Rs.\[({{n}^{2}}+2)\]and the expenditure of Raj on the \[{{n}^{th}}\] day is\[(2n+1)\]. In how many days his total savings will Rs.1240?

    A)  10                   

    B)  12           

    C)  15                   

    D)  16

    Correct Answer: D

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