SSC GD Coding-Decoding Questions, Download Free PDF

Preparing for the SSC GD exam requires a smart strategy, especially for the General Intelligence and Reasoning section. You can expect at least 3-5 questions from the Coding-Decoding topic alone. These questions range from easy to moderate, but they can be tricky if you don’t understand the logic. Many candidates lose marks here because they spend too much time trying to figure out the pattern during the exam. The reason is a lack of practice with the right type of questions. In this blog, we have provided important Coding-Decoding Questions for SSC GD along with free topic-wise tests. You are strongly advised to first download the PDF for free to understand the latest patterns, and then take our free tests to improve your speed.

What is Coding-Decoding? Why is it Important for SSC GD?

Coding-Decoding is a method of sending secret messages. In the exam, a word or a sentence is “coded” using a specific rule (logic), and you have to “decode” another word using the same rule.

In the SSC GD exam, this topic is a rank booster because:

• It tests your logical thinking ability.
• The questions are highly scoring if you know the alphabet positions (A=1, B=2, etc.).
• It does not require complex formulas, just observation.

SSC GD Coding-Decoding: Important Patterns & Concepts

Here, we have mentioned the most common types of logic used in SSC GD questions.

Type of Coding	Key Concepts & Examples
Letter Coding	Letters are replaced by other letters according to a specific pattern (e.g., +1, -1, +2 shifting). Example: If CAT is coded as DBU.
Number Coding	Words are replaced by numbers based on their position in the alphabet. Example: A=1, BAT=23.
Substitution Coding	Object names are substituted. Example: If ‘White’ is called ‘Blue’, ‘Blue’ is called ‘Red’.
Opposite Letter Coding	Letters are replaced by their reverse pair (A ↔ Z, B ↔ Y, M ↔ N).
Fictitious Language	Sentences are coded into jumbled words. Example: ‘pit dar na’ means ‘you are good’.

Download Free PDF of Coding-Decoding Questions for SSC GD

Here, we have provided a PDF of Coding-Decoding questions for SSC GD with detailed answers. You can download the PDF for free by clicking on the button given below. After downloading the PDF, try to solve the questions yourself first. The reasoning syllabus is vast, but solving these selected questions will provide you with confidence for the real exam.

Q1. In a certain code language, if ‘M’ is coded as ’13’ and ‘PEN’ is coded as ’35’, then how will ‘HOTEL’ be coded in that language?

(a) 12

(b) 60

(c) 26

(d) 28

Answer: (b) 60

(Logic: Sum of position numbers. H=8, O=15, T=20, E=5, L=12. Total = 60)

Q2. In a certain code language, ‘TEACHER’ is written as ‘VGCEJGT’. How will ‘CHILDREN’ be written in that code?

(a) EJKNFTGP

(b) EJKNFGTO

(c) EJKNEGTP

(d) EJKNFTGO

Answer: (a) EJKNFTGP

(Logic: +2 shift in every letter. C+2=E, H+2=J, etc.)

Q3. If ‘WATER’ is written as ‘YCVGT’, then what is written as ‘HKTG’?

(a) IRFE

(b) FIRE

(c) REFI

(d) ERIF

Answer: (b) FIRE

(Logic: The question asks what word is coded as HKTG. The pattern is +2. Reverse logic (-2) gives FIRE.)

Q4. In a certain code, ‘SKY’ is called ‘RED’, ‘RED’ is called ‘TOMATO’, ‘TOMATO’ is called ‘MILK’, ‘MILK’ is called ‘SOIL’. Then what is the colour of blood?

(a) Red

(b) Tomato

(c) Soil

(d) Milk

Answer: (b) Tomato

(Logic: Blood is Red, and Red is called Tomato.)

Q5. If Z = 52 and ACT = 48, then BAT will be equal to:

(a) 39

(b) 41

(c) 44

(d) 46

Answer: (d) 46

(Logic: Position number × 2. B(2)+A(1)+T(20) = 23. 23 × 2 = 46.)

Q6. In a code language, ‘123’ means ‘hot filtered coffee’, ‘356’ means ‘very hot day’, and ‘589’ means ‘day and night’. Which digit stands for ‘very’?

(a) 9

(b) 5

(c) 8

(d) 6

Answer: (d) 6

(Logic: Compare sentences to eliminate common words. ‘Hot’ is 3, ‘Day’ is 5. So ‘Very’ is 6.)

Q7. If ‘ORIENT’ is written as ‘532146’ and ‘SOUL’ is written as ‘7598’, how will ‘LINE’ be written?

(a) 8241

(b) 6241

(c) 8231

(d) 4281

Answer: (a) 8241

(Logic: Direct coding from the given words. L=8, I=2, N=4, E=1.)

Q8. In a certain code language, ‘MADRAS’ is coded as ‘NBESBT’. How is ‘BOMBAY’ coded in that language?

(a) CPNCBZ

(b) CPNCBX

(c) CPOCBZ

(d) CQOCBZ

Answer: (a) CPNCBZ

(Logic: +1 shift to the next letter.)

Q9. If ROSE is coded as 6821, CHAIR is coded as 73456 and PREACH is coded as 961473, what will be the code for SEARCH?

(a) 246173

(b) 214673

(c) 214763

(d) 216473

Answer: (b) 214673

(Logic: Direct Letter Substitution from the words given.)

Q10. If A = 26, SUN = 27, then CAT = ?

(a) 24

(b) 27

(c) 57

(d) 58

Answer: (c) 57

(Logic: Reverse alphabetical order values. C=24, A=26, T=7. Sum = 57.)

How to Prepare Coding-Decoding for SSC GD?

Here are some tips that will help you prepare for Coding-Decoding for the SSC GD 2025 exam. Follow these tips and implement them while studying.

• Memorize Alphabet Positions (EJOTY): This is the most important step. You must remember the position of every letter (e.g., P is 16, T is 20). Use the “EJOTY” trick (E=5, J=10, O=15, T=20, Y=25) to find positions quickly.
• Learn Opposite Pairs: Many questions are based on opposite letters (like A-Z, B-Y, C-X). Remember them using mnemonics (e.g., LoVe for L-O and V-E).
• Identify the Pattern First: Don’t start calculating immediately. Look at the word and the code. Is the code longer? Is it just the numbers? Analyze if the series is increasing (+1, +2) or decreasing (-1, -2).
• Use Visuals for Practice: Write the word and its code side by side. Draw arrows to match the letters. This visual method helps you spot the logic (like cross-coding) much faster than trying to do it in your head.
• Practice Daily with Our Free Topic-wise Tests: Practice at least 10-15 Coding-Decoding questions daily. Use our free topic-wise tests and analyze them so that you can know your weaknesses. Taking these tests will help you improve your speed, accuracy, and time management skills.

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FAQs: Coding-Decoding Questions for SSC GD