Railways R.R.C. (Jabalpur) Solved Paper Held on 1st Shift 30-11-2014

  • question_answer Find the wrong number in the given number Series- 2, 10, 30, 68, 120, 222.

    A) 222                              

    B) 120

    C) 30                                

    D) 68

    Correct Answer: B

    Solution :

    As,        \[{{1}^{3}}+1=2\] \[{{2}^{3}}+2=10\] \[{{3}^{3}}+3=30\] \[{{4}^{3}}+4=68\] \[{{5}^{3}}+5=130\] \[{{6}^{3}}+6=222\] Hence, 120 is the wrong number in the given number series.

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