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Railways Sample Paper RRB (Group D) Sample Test Paper-1

  • question_answer
    Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it? aa _ aabb _ b _ aa _ aabb _bb

    A)  abbab 

    B)  bbbaa

    C)  babba 

    D)  aabbb

    Correct Answer: A

    Solution :

    [a] \[\begin{align}   & \left. a\,\,a\,\,\underline{a}\,\,a\,\,a\,\, \right| \\  & \left. b\,\,b\,\,\underline{b}\,\,b\,\,\underline{b}\,\,\, \right| \\  & \left. a\,\,a\,\,\underline{a}\,\,a\,\,a\,\, \right| \\  & b\,\,b\,\,\underline{b}\,\,b\,\,b \\ \end{align}\]


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