7th Class Mathematics Related to Competitive Exam Question Bank Coding-Decoding

  • question_answer
    If ACTION is coded a ZXGRLM, then HEALTH will be coded in the same way as:

    A) SVZOGS        

    B) TVZOGT

    C) RUZPGR                    

    D) QVGOZQ

    Correct Answer: A

    Solution :

    The letters of the word are coded by their represented letters in the reverse series. Letters in natural series \[\begin{matrix}    \text{A} & \text{C} & \text{T} & \text{I} & \text{O} & \text{N}  \\ \end{matrix}\] Letters in reverse series \[\begin{align}   & \begin{matrix}    \text{Z} & \text{X} & \text{G} & \text{R} & \text{L} & \text{M}  \\ \end{matrix} \\  & \begin{matrix}    \downarrow  & \,\downarrow  & \,\downarrow  & \,\downarrow  & \,\downarrow  & \,\downarrow   \\ \end{matrix} \\ \end{align}\] Position of letters \[\begin{matrix}    {{\text{1}}^{\text{st}}} & {{\text{3}}^{\text{rd}}} & \text{2}{{\text{0}}^{\text{th}}} & {{\text{9}}^{\text{th}}} & \text{1}{{\text{5}}^{\text{th}}} & \text{1}{{\text{4}}^{\text{th}}}  \\ \end{matrix}\] Similarly, Letters in natural series \[\begin{matrix}    \text{H} & \text{E} & \text{A} & \text{L} & \text{T} & \text{H}  \\ \end{matrix}\] Letters in reverse series \[\begin{matrix}    \text{S} & \text{V} & \text{Z} & \text{O} & \text{G} & \text{S}  \\    \downarrow  & \downarrow  & \downarrow  & \downarrow  & \downarrow  & \downarrow   \\ \end{matrix}\] Position of letters \[\begin{matrix}    {{\text{8}}^{\text{th}}} & {{\text{5}}^{\text{th}}} & {{\text{1}}^{\text{st}}} & \text{1}{{\text{2}}^{\text{th}}} & \text{2}{{\text{0}}^{\text{th}}} & {{\text{8}}^{\text{th}}}  \\ \end{matrix}\]


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