Railways Sample Paper RRB (Assistant Loco Pilot & Technician) Sample Test Paper-9

  • question_answer
    Direction: In each of the following questions, a number series is given with one term missing. Choose the correct alternative that will continue the same pattern and replace the question mark in the given series.
    2, 2,5,13, 28,?

    A)  49                   

    B)  50

    C)  51                 

    D)       52

    Correct Answer: D

    Solution :

     The pattern is \[+0,+3,+8,+15,......\] i.e. \[+({{1}^{2}}-1),({{2}^{2}}-1),+({{3}^{2}}-1),+({{4}^{2}}-1),........\] So, missing term  \[=28=({{5}^{2}}-1)=28=24=52\]


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