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

  • question_answer
    In a certain code, BREAKTHROUGH is written as EAOUHRBRGHKT. How is DISTRIBUTION written in that code?

    A) TISTBUONDIRI         

    B) STTIBUONRIDI

    C) STTIBUDIONRI         

    D) RISTTIBUDION

    Correct Answer: C

    Solution :

    Let us divide the letters of the given work into pairs and label these pairs from 1 to 6. \[\begin{matrix}    \frac{\text{BR}}{\text{1}} & \frac{\text{EA}}{\text{2}} & \frac{\text{KT}}{\text{3}} & \frac{\text{HR}}{\text{4}} & \frac{\text{OU}}{\text{4}} & \frac{\text{GH}}{\text{6}}  \\ \end{matrix}\] Clearly, the code contains these pairs arranged in the order 2, 5, 4, 1, 6, 3 Dividing the letters of the word DISTRIBUTION in pairs, we have pairs, we have \[\begin{matrix}    \frac{\text{DI}}{\text{1}} & \frac{\text{ST}}{\text{2}} & \frac{\text{RI}}{\text{3}} & \frac{\text{BU}}{\text{4}} & \frac{\text{TI}}{\text{5}} & \frac{\text{ON}}{\text{6}}  \\ \end{matrix}\] Arranging these in the order 2, 5, 4, 1, 6, 3 we get the required code i.e., STTIBUDIONRI.


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