Coding-Decoding Questions with Answers – Set 1

 

Introduction

Coding-Decoding questions test your ability to identify patterns between letters, words, and numbers. Practice these questions to improve your logical reasoning and analytical thinking skills.


Question 1

If CAT is coded as DBU, how is DOG coded?

A) EPH

B) EPG

C) DPH

D) FQI

Answer

A) EPH

Explanation

Each letter is shifted one position forward.

C → D

A → B

T → U

Similarly:

D → E

O → P

G → H

DOG → EPH


Question 2

If BOOK is coded as CPPL, how is PEN coded?

A) QFO

B) RGP

C) QEN

D) QEP

Answer

A) QFO

Explanation

Each letter moves one step forward.

P → Q

E → F

N → O

PEN → QFO


Question 3

If APPLE is coded as BQQMF, how is MANGO coded?

A) NBOHP

B) OCPIQ

C) MBNHP

D) NCPHP

Answer

A) NBOHP

Explanation

Each letter is increased by one position.

M → N

A → B

N → O

G → H

O → P

MANGO → NBOHP


Question 4

If SUN is coded as TVO, how is SKY coded?

A) TLZ

B) TLX

C) UKZ

D) TMY

Answer

A) TLZ

Explanation

Each letter moves forward by one.

S → T

K → L

Y → Z

SKY → TLZ


Question 5

If CAR is coded as DBS, how is BUS coded?

A) CTV

B) CUT

C) DVT

D) CVT

Answer

A) CTV

Explanation

Each letter increases by one.

B → C

U → V

S → T

BUS → CVT


Key Learning

In many Coding-Decoding questions, letters are shifted forward or backward in the alphabet. Always check simple patterns before looking for complex rules.


Practice Tip

Write the alphabet sequence (A–Z) and observe how letters move from one position to another.


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