Coding Decoding Questions for SSC CGL 2025 Exam

Coding-Decoding is a reasoning topic in SSC CGL where words or letters are represented in a coded form. Based on past exam trends, candidates usually face 2–3 questions of easy to moderate difficulty. One can solve questions easily from this topic if he/she has practiced a lot on questions based on different patterns. They are advised to first understand the basics of the Coding-Decoding and then solve the questions. In this blog, we have provided the detailed concept of Coding-Decoding with separate examples for Coding and Decoding. Also, we have provided the most important expected questions that can be asked in the SSC CGL exam.

Concept of Coding-Decoding

Concept: Coding-Decoding is a method used in puzzles or problems to represent words or letters differently. The idea is to encode (transform) a message into a different form (coded), and then decode the coded one to its original form. Here’s a simple explanation of the concept:

1. What is Coding?

In coding, you take a piece of information (like a word or letter) and change it into a different form according to some rules. For example:

• Word → Code (changing a word into code)

For instance, you might replace each letter in the word “CAT” with the next letter in the alphabet:

• C → D
• A → B
• T → U

So, “CAT” becomes “DBU.”

2. What is Decoding?

Decoding is the opposite of coding. It means you take the coded message and convert it back to its original form using the same rule.

• Code → Word

If you were given the code “DBU,” you could decode it back to “CAT” by reversing the rule:

• D → C
• B → A
• U → T

So, decoding “DBU” brings you back to “CAT.”

Coding Decoding Questions for SSC CGL, Download Free PDF

Below are practice/sample coding-decoding questions designed from past SSC CGL exam patterns. These are for preparation purposes only and not official SSC exam questions. A solution PDF is attached below that contains detailed solutions to these questions. We have also provided more questions in the PDF. Candidates are advised to first understand the concept and then try to solve the questions.

Question 1: In a certain code language, ‘ALMOND’ is coded as ’DOPKJG’ and ‘DRIVEN’ is coded as ’GNLRHJ’, then ‘URGENCY’ will be coded as ____ in the same code language.

A) XUJHQEB

B) QNJHJFU

C) QNCAJYU

D) XUJHQFB

Question 2: In a certain coding system, ‘legend talent vocal skill’ is coded as ‘mgh, emv, stu, trp’, ‘vocal lament legend’ is coded as ‘stu, mgh, org’ and ‘ability lament talent legend’ is coded as ‘org, kls, mgh, trp’. How will ‘talent skill ability lament’ are coded in this coding system?

A) kls, mgh, stu, emv

B) emv, kls, trp, org

C) stu, mgh, emv, org

D) emv, kls, mgh, trp

Question 3: In a certain code language, ‘VULTURE’ is coded as ‘16, 9, 9, 4, 9, 9, 7’ and ‘GRANITE’ is coded as ’13, 9, 1, 16, 9, 4, 7’, then ‘SOCIALIST’ will be coded as ‘________’ in the same code language.

A) 10, 11, 9, 9, 1, 9, 9, 10, 4

B) 10, 9, 9, 9, 1, 9, 9, 10, 4

C) 15, 11, 8, 9, 1, 9, 9, 15, 4

D) 15, 9, 11, 9, 1, 9, 9, 15, 4

Question 4: In a certain code language, if the code for word ‘HIRE’ is ‘16273615’, for ‘BOWL’ is ‘4456924’, then what is the code for word ‘TAME’ in the same code language?

A) 6033915

B) 4033915

C) 4022615

D) 6032615

Question 5: If ‘PLANT’ is coded as ‘YSFQU’, ‘MOLTEN’ is coded as ‘TKZRUS’, then, ‘DAISY’ is coded as ‘_____’.

A) DXFIN

B) XDFNI

C) DXNFI

D) XDMFI

Disclaimer: The coding-decoding questions in this article are practice examples based on past SSC CGL exam patterns. They are not official SSC questions and should not be treated as guaranteed exam content. Actual questions may vary, so candidates are advised to confirm details through official SSC notifications and answer keys.

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