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Word Rearrangement Code

Introduction

Word Rearrangement Codes change the order of letters in a word according to a fixed positional rule - for example, reversing the word, swapping pairs, moving vowels to the front, or rotating letters. These questions test your ability to spot positional patterns and apply the same reordering to new words quickly.

This pattern is important because many competitive exams use rearrangement rules as a quick check of positional reasoning and attention to letter-ordering.

Pattern: Word Rearrangement Code

Pattern

The key concept is: the letters of the original word are repositioned according to a consistent rule (e.g., reverse order, swap adjacent pairs, rotate left/right by n, place vowels first, or interleave ends). Identify the positional map from examples and apply it to the target word.

Common rearrangement maps to test for:

  • Reverse: ABCD → DCBA
  • Swap pairs: ABCD → BADC
  • Rotate right/left: ABCD → DABC (right) or BCDA (left)
  • Vowels first: FLOW → OFLW (vowels moved ahead)
  • Interleave ends: ABCDE → A E B D C (take outer letters inward)

Step-by-Step Example

Question

In a certain code the word BRAVE is written as EBRAV. What is the code for PLAIN?

Solution

  1. Step 1: Identify the positional change

    Compare BRAVE → EBRAV: original letters B R A V E; coded letters E B R A V. Notice that the last letter E moved to the front, and the rest shifted right by one position. The rule = rotate right by 1 (last letter becomes first).

  2. Step 2: Apply the rule to PLAIN

    Original P L A I N → move last letter N to front, then append P L A I → Result = NPLAI.

  3. Final Answer:

    NPLAI

  4. Quick Check:

    Reverse-test BRAVE: rotate right by 1 → E B R A V (matches given). Applied to PLAIN → N P L A I ✅

Quick Variations

1. Reverse the whole word (simple).

2. Swap adjacent pairs: ABCD → BADC.

3. Move first letter to end repeatedly (left rotate).

4. Place vowels first in their original order, then consonants.

5. Interleave letters from ends toward center (A, E, B, D, C).

Trick to Always Use

  • Step 1: Compare first and last letters between example and coded word to detect rotations or end-swaps.
  • Step 2: Check positions of vowels vs consonants to spot vowel-front rules or preserved relative order.
  • Step 3: Test the suspected map on a second example mentally (or on paper) before applying to the target.

Summary

Summary

  • Rearrangement code means letters are moved according to a fixed positional rule.
  • Common patterns: reverse, rotate, swap pairs, vowels-first, interleave ends.
  • Compare first and last letters to detect the nature of movement.
  • Apply the same mapping to get the code for the new word.

Example to remember:
BRAVE → EBRAV (rotate right by 1) ⇒ PLAIN → NPLAI

Practice

(1/5)
1. If TAP = PAT, then what is DOG = ?
easy
A. GOD
B. OGD
C. DGO
D. ODG

Solution

  1. Step 1: Identify the rule

    Compare TAP → PAT: letters are reversed (T A P → P A T). Rule = reverse the whole word.

  2. Step 2: Apply the rule to DOG

    Reverse DOG → G O D → GOD.

  3. Final Answer:

    GOD → Option A

  4. Quick Check:

    Reverse GOD → DOG ✅
Hint: If example shows end-to-start mapping for all letters, reverse the word.
Common Mistakes: Swapping only first/last instead of reversing entire word.
2. If GOLD = DGOL, then what is PLAY = ?
easy
A. AYPL
B. YPLA
C. PLAY
D. AYLP

Solution

  1. Step 1: Identify the rule

    GOLD → DGOL: last letter moves to the front and the rest shift right by one. Rule = rotate right by 1 (last → first).

  2. Step 2: Apply the rule to PLAY

    Move Y to the front → Y P L A → YPLA.

  3. Final Answer:

    YPLA → Option B

  4. Quick Check:

    Rotate YPLA left by 1 → PLAY ✅
Hint: If last letter becomes first, rotate right by one.
Common Mistakes: Rotating left instead of right.
3. If FIND = IFDN, then what is WORD = ?
easy
A. OWDR
B. WODR
C. RWDO
D. ODWR

Solution

  1. Step 1: Identify the rule

    FIND → IFDN: letters are swapped in adjacent pairs (positions 1↔2 and 3↔4). Rule = swap each adjacent pair.

  2. Step 2: Apply the rule to WORD

    Split WORD into pairs (W O)(R D) → swap each pair → (O W)(D R) → combine → OWDR.

  3. Final Answer:

    OWDR → Option A

  4. Quick Check:

    Swap pairs in OWDR → WORD ✅
Hint: Group letters as (1,2),(3,4) and swap within each pair.
Common Mistakes: Forgetting to swap all pairs or mis-pairing letters when length is even.
4. If PLANT = APLNT, then what is GLOVE = ?
medium
A. OGVLE
B. GLOEV
C. OEGVL
D. EGVLO

Solution

  1. Step 1: Identify the rule

    PLANT → APLNT: vowels are moved to the front preserving their order, followed by consonants in original order. Rule = vowels first (preserve order), then consonants.

  2. Step 2: Apply the rule to GLOVE

    G L O V E → vowels: O, E (in order) → O E; consonants: G L V (in order) → combine → OEGVL.

  3. Final Answer:

    OEGVL → Option C

  4. Quick Check:

    Vowels O,E front then consonants G,L,V → OEGVL ✅
Hint: Collect vowels in order first, then append consonants in order.
Common Mistakes: Changing relative order of vowels or consonants.
5. If HEART = HTERA, then what is SWING = ?
medium
A. SNWIG
B. SGWIN
C. SGWNI
D. SWIGN

Solution

  1. Step 1: Identify the rule

    HEART → H T E R A: letters are taken alternately from the ends toward the center: 1st, last, 2nd, 2nd-last, middle. Rule = interleave outer letters inward.

  2. Step 2: Apply the rule to SWING

    S W I N G → sequence: S (1st), G (last), W (2nd), N (2nd-last), I (middle) → SGWNI.

  3. Final Answer:

    SGWNI → Option C

  4. Quick Check:

    Interleave SWING → S G W N I ✅
Hint: Pick letters alternately from the start and end, moving inward.
Common Mistakes: Losing track of the middle letter for odd-length words.

Mock Test

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