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Railways RRB (Assistant Loco Pilot & Technician) Solved Paper-2 (2013)

  • question_answer
    What should come in place of the question mark (?) in the following number series? 3 7 13 ? 31 43

    A)  18                    

    B)  19

    C)  23                    

    D)  21

    Correct Answer: D

    Solution :


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