Railways Sample Paper RRB (Assistant Loco Pilot) Sample Test Paper-3

  • question_answer
    DIRECTION: Study the following information and answer the questions given below
    (i) \['A-B'\]means 'B is father of A'
    (ii) \['A\times B'\]means 'A is sister of B'
    (iii) \['A+B'\] means 'A is brother of B'
    (iv) \['A-B'\] means 'B is mother of A'
    Which of the following means R is nephew of T?

    A)  \[R+N-Q\times T\]    

    B)  \[R-Q\times N\times T\]

    C)                     \[R-N\times T\]       

    D)                     \[T+M-R\]       

    Correct Answer: A

    Solution :

    If R is nephew of T then the required equation must depict R as a male. Reject (b) and (c) because in these equations the symbol '?' denotes the sex of Q and N respectively. The sex of R remains unknown. Reject  because these equations depict R older then T. Now, check (a) \[{{Q}_{(-)}}-T\] \[{{R}_{(+)}}-N\] Obviously, R is the nephew of T.


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