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

  • question_answer
    If MUSK is coded as 146816, then ZERO will be coded as:

    A) 1015                           

    B) 122912

    C) 1813                           

    D) 914

    Correct Answer: B

    Solution :

    The coded number signifies the position of the alphabet in its reverse order of the alphabetical series (ZYXW....) \[\begin{matrix}    \text{M} & \text{U} & \text{S} & \text{K}  \\    \downarrow  & \downarrow  & \downarrow  & \downarrow   \\    \text{1}{{\text{4}}^{\text{th}}} & {{\text{6}}^{\text{th}}} & {{\text{8}}^{\text{th}}} & \text{1}{{\text{6}}^{\text{th}}}  \\ \end{matrix}\] Similarly, \[\begin{matrix}    \text{Z} & \text{E} & \text{R} & \text{O}  \\    \downarrow  & \downarrow  & \downarrow  & \downarrow   \\    {{\text{1}}^{\text{st}}} & \text{2}{{\text{2}}^{\text{nd}}} & {{9}^{\text{th}}} & \text{1}{{\text{2}}^{\text{th}}}  \\ \end{matrix}\]


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