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10th Class Mental Ability Series Completion Question Bank Series Completion

  • question_answer
    Find the missing letters DCBA, WXYZ, HGFE, STUV, LKJI,.....

    A)  OPQR                    

    B)         MNOP

    C)  NOPQ                 

    D)         ONML

    Correct Answer: A

    Solution :

     The pattern is \[^{4}{{D}^{3}}{{C}^{2}}{{B}^{1}}A,\] \[{{W}_{4}}{{X}_{3}}{{Y}_{2}}{{Z}_{1}},\] \[^{8}{{H}^{7}}{{G}^{6}}{{F}^{6}}E,\] \[{{S}_{8}}{{T}_{7}}{{U}_{6}}{{V}_{5}},\] \[^{12}{{L}^{11}}{{K}^{10}}{{J}^{9}}I,\]  \[{{O}_{12}}{{P}_{11}}{{Q}_{10}}{{R}_{9}},...\] \[\therefore \]Missing letter \[=OPQR.\]


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