Examkin

Question

Difficulty: Very hardCoding and Decoding

Match each coded string in List-I with its corresponding original word and transformation logic in List-II.

  • RVPERNPENCIL (Consonants shifted forward by +2; Vowels replaced by reverse alphabetical position letters)
  • TDIWHMGARDEN (Consonants replaced by reverse alphabetical position letters; Vowels shifted forward by +3)
  • GJPUFPFLOWER (Odd-positioned letters shifted forward by +1; Even-positioned letters shifted backward by -2)
  • BMQSDMPLANET (Word split into two 3-letter halves, each half reversed; 1st half shifted +1, 2nd half shifted -1)

Answer

RVPERN pairs with PENCIL (Consonants +2; Vowels reversed); TDIWHM pairs with GARDEN (Consonants reversed; Vowels +3); GJPUFP pairs with FLOWER (Odd positions +1; Even positions -2); BMQSDM pairs with PLANET (Halves reversed; 1st half +1, 2nd half -1).
Each coded string strictly adheres to a unique multi-step rule: RVPERN uses consonant +2 shift and vowel reverse position; TDIWHM uses consonant reverse position and vowel +3 shift; GJPUFP uses alternating odd (+1) and even (-2) positional shifts; BMQSDM uses half-word reversal combined with +1 and -1 shifts respectively.

Step-by-Step Solution

1
Analyze RVPERN using vowel and consonant operations.
Checking PENCIL: Consonants P(+2)=R, N(+2)=P, C(+2)=E, L(+2)=N; Vowels E->V (27-5=22) and I->R (27-9=18). This forms RVPERN.
Identify pattern separating vowel and consonant rules.
2
Analyze TDIWHM using opposite letters for consonants.
Checking GARDEN: Consonants G->T, R->I, D->W, N->M; Vowels A(+3)=D, E(+3)=H. This forms TDIWHM.
Verify dual-rule application based on letter type.
3
Analyze GJPUFP using positional indexing.
Checking FLOWER: Odd positions (1,3,5) F->G, O->P, E->F (+1 shift); Even positions (2,4,6) L->J, W->U, R->P (-2 shift). This forms GJPUFP.
Verify alternating positional shift pattern.
4
Analyze BMQSDM using block reversal and directional shifts.
Checking PLANET: First half 'PLA' reversed is 'ALP', shifted +1 gives 'BMQ'. Second half 'NET' reversed is 'TEN', shifted -1 gives 'SDM'. Combining gives BMQSDM.
Verify half-word reversal and split directional shifts.

Key Concept

Complex Multi-Rule Coding and Decoding (Vowel/Consonant Dual Rules, Positional Shifts, Half-Reversals)
Rate this question

Topics

Coding and Decoding

More questions from this topic