Wednesday, 1 April 2026

 

Reasoning – Coding-Decoding Basics (Easy Tricks & Examples)

Coding decoding logical patterns

Coding-Decoding is a simple and scoring topic in reasoning. You just need to understand patterns between letters or numbers.


Basic Idea

In coding-decoding, a word is converted into another form using a pattern.

Example:
CAT → DBU

C → D (+1)
A → B (+1)
T → U (+1)


Alphabet Positions

A = 1, B = 2, C = 3, ... Z = 26

Example:
CAT → 3,1,20


Common Types

  • Letter shifting (+1, -1, +2)
  • Reverse pattern
  • Position-based coding

Easy Examples

Q1:
CAT → DBU
DOG → ?

Answer:
D → E
O → P
G → H
→ EPH ✔


Reverse Coding

Example:
CAT → TAC

Just reverse the word.


Number Coding

Example:
CAT → 3 1 20

Use alphabet positions.


Practice Questions

Q1: DOG → EPH → CAT → ?

Q2: BAT → ? (Reverse)

Q3: SUN → ? (Position)


Answers

Q1: DBU
Q2: TAB
Q3: 19 21 14


Quick Tricks

  • Check +1 / -1 pattern first
  • Look for reverse pattern
  • Use alphabet positions if needed

Final Tip

Coding-decoding becomes easy with practice. Try to identify patterns quickly without overthinking.


Continue Reasoning

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