type 7 symbol coding & decoding Detailed Explanation And More Example

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Study the following information carefully to answer these questions:

The digits from 0 to 9 are coded as shown below along with the exceptions I and II.

Digit 3 8 0 7 4 6 9 2 5 1
Letter Code H $ R A M % L K E &
Exception I:
  • If a number begins and ends with a non - Zero odd digit, then the first and the last digits are to coded as Y and # respectively.
    • Exception II:
  • If a number begins and ends with an even digit (including Zero), then the first and the last digits are to be coded as β and X respectively.
    • [Agriculture Officers' 2005]

    The following question based on coding & decoding topic of verbal reasoning

    Questions :  What does R%LAK& represent?

    (a) 69725

    (b) 697210

    (c) 69751

    (d) 64721

    e) None of these

    The correct answers to the above question in:

    Answer: (e)

    R, %, L, A, K and % are codes for 0, 6, 9, 7, 2 and 1 respectively.

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    Question : 1

    What will be the code for 764981?

    a) A%ML$&

    b) Y%ML$&

    c) Y%ML$#

    d) A%ML$#

    e) None of these

    Answer: (c)

    Since the number begins and ends with an odd digit,

    so 7 shall be coded as Y and 1 as #.

    The codes are 6, 4, 9, 8 are %, M, L, $ respectively.

    So, the required code is Y % ML$#.

    Question : 2

    What will be the code for 278140?

    a) βA$&MR

    b) βA$&MX

    c) KA$&MR

    d) YA$&M#

    e) None of these

    Answer: (b)

    Since 278140 has even digits at the first and last places,

    so 2 shall be coded as β and 0 as X. The codes for 7, 8, 1, 4 are A, $, β, M respectively.

    So, the required code is βA$&MX.

    Question : 3

    What does MHLEK% represent?

    a) 439526

    b) 439526

    c) 436529

    d) 489526

    e) None of these

    Answer: (a)

    M, H, L, E, K, % are codes for 4, 3, 9, 5, 2, 6 respectively.

    So, MHLEK% represents 439526.

    Question : 4

    Which of the following numbers can the code YM$ME# represent? (A) 138450 (B) 338457 (C) 538459

    a) Only (A) and (C)

    b) Only (B)

    c) Only (C)

    d) Only (B) and (C)

    e) None of these

    Answer: (d)

    H, $, M, and E are codes for 3, 8, 4, and 5 respectively.

    Y at the first place and # at the last place indicate that the number should begin and end with an odd digit.

    Clearly, only (B) and (C) satisfy this condition.

    Question : 5

    If ZEBRA can be written as 2652181, how can COBRA be written?

    a) 302181

    b) 3152181

    c) 31822151

    d) 1182153

    Answer: (b)

    Putting  A = 1, B = 2, C = 3, ……, X = 24, Y = 25, Z = 26,

    we have: ZEBRA > Z/E/B/R/A > 26/5/2/18/1 > 2652181.

    COBRA > C/O/B/R/A > 3/15/2/18/1 > 3152181.

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