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Railways Sample Paper RRB (Assistant Loco Pilot) Sample Test Paper-17

  • question_answer
    Three of the following four are alike in a certain way and so form a group. Which is the one that does not belong to that group?

    A) 72                                

    B) 42                                

    C) 152                   

    D)         110                             

    Correct Answer: C

    Solution :

    \[72={{9}^{2}}-9\] \[42={{7}^{2}}-7\] \[152={{12}^{2}}+8\] \[110={{11}^{2}}-11\] \[156={{13}^{2}}-13\] Except 152, others show the trend \[{{x}^{2}}-x.\]


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