Examkin

Question

Difficulty: HardCoding and Decoding

In a certain code language, the word RESOLUTE is written as KHJRQXIH. Based on the exact same transformation logic, how is the word DYNAMICS written in that code language?

  1. YBODPLZVAnswer
  2. B
    FBPDOLEV
  3. C
    WBMDNLXV
  4. D
    GDQBPTFJ

Answer

The coded representation for DYNAMICS is YBODPLZV.
The code follows a dual position-dependent rule: odd-numbered positions are converted to their reverse alphabetical letter (A=1↔Z=26A=1 \leftrightarrow Z=26) and then shifted forward by 2 positions, whereas even-numbered positions are shifted forward by 3 positions. Applying this systematically to DYNAMICS yields YBODPLZV.

Step-by-Step Solution

1
Analyze the transformation rule in RESOLUTE -> KHJRQXIH by indexing positions 1 to 8
Letters at odd positions (1, 3, 5, 7) undergo reverse alphabetical transformation (A↔ZA \leftrightarrow Z) followed by a forward shift of +2+2. Letters at even positions (2, 4, 6, 8) undergo a standard forward shift of +3+3.
Deconstructing position-dependent rules is necessary to establish the coding algorithm.
2
Apply the odd-position transformation (Reverse Letter + 2) to DYNAMICS
1st letter D (4) -> Reverse W (23) + 2 = Y; 3rd letter N (14) -> Reverse M (13) + 2 = O; 5th letter M (13) -> Reverse N (14) + 2 = P; 7th letter C (3) -> Reverse X (24) + 2 = Z.
Odd positions follow reverse alphabetical indexing with a shift offset.
3
Apply the even-position transformation (Forward Shift + 3) to DYNAMICS
2nd letter Y (25) + 3 = B; 4th letter A (1) + 3 = D; 6th letter I (9) + 3 = L; 8th letter S (19) + 3 = V.
Even positions advance by 3 alphabetical steps.
4
Combine the resulting transformed letters in sequence
Pos 1 to 8: Y - B - O - D - P - L - Z - V.
Assembling the position results forms the complete final coded word YBODPLZV.

Key Concept

Positional parity coding with reverse alphabetical indexing and incremental shifts
Estimated Time:1m 50s
Rate this question

Topics

Coding and Decoding

More questions from this topic