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10th Class Mathematics Related to Competitive Exam Question Bank Logical Reasoning

  • question_answer
    In a row of 40 boys, Satish was shifted 10 places to the right of Rohan and Kartik was shifted 10 places to the left of Vikas. If Vikas was twenty-sixth from the left and there were three boys between Kartik and Satish after shifting, what was the position of Rohan in the row?                  

    A)  10th from the right end             

    B)  10th from the left end              

    C)  39th from the right end             

    D)  Data inadequate                  

    Correct Answer: D

    Solution :

    There can be two possible patterns. Case I:    \[\overline{{{1}^{st}}}\,\,\,\,\underset{Satish}{\mathop{\overline{{{12}^{th}}}\,}}\,\,\,\,\,\underset{Kartik}{\mathop{\,\overline{{{16}^{th}}}}}\,\,\,\,\,\,\,\underset{Vikas}{\mathop{\overline{{{26}^{th}}}}}\,\] According to this pattern, Rohan would be at 2nd position. Case II:  \[\overline{{{1}^{st}}}\,\,\,\,\underset{Kartik}{\mathop{\overline{{{16}^{th}}}\,}}\,\,\,\,\,\underset{Satish}{\mathop{\,\overline{{{20}^{th}}}}}\,\,\,\,\,\,\,\underset{Vikas}{\mathop{\overline{{{26}^{th}}}}}\,\] According to this pattern, Rohan would be at 10th position from the left end. Thus, data is inadequate.


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