Coding Decoding for SSC GD | Concepts & Practice

Learn the shortcut

Understand the fastest pattern for this topic before you attempt full MCQs.

Avoid common traps

See where students commonly lose marks so you can eliminate bad options earlier.

Solve faster in exam

Apply one practical method before attempting MCQs and cut down hesitation.

Summary Formula Tricks Mistakes Solved Example Practice FAQ

Coding Decoding revision for SSC GD: understand the relation, apply the correct logical method, avoid assumptions and practise under time.

Coding-Decoding replaces letters, words or numbers using a consistent rule. Common SSC patterns include position shifts, reverse order, substitution, pair coding and mixed letter-number codes.

SSC GD focus: Identify the relation or positional rule first, then solve with the shortest valid reasoning path and verify the final option.

Coding Decoding revision: rule → diagram/relation → option check → timed practice → error review.

Core relation
Fast method
Common trap
Approved practice

Alphabet position: A=1...Z=26
Opposite letter position = 27 - original position

Compare the first and last letters before analysing the whole word. Often the code is a simple shift or reversal visible from two positions.

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Practice Questions Login for free progress tracking

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Translate the wording into a small diagram, relation or rule.
Use only information stated or logically forced by the question.
Eliminate options only after the core relation is clear.

Adding assumptions that are not given.
Reversing left/right, rank direction or relationship direction.
Choosing a familiar-looking option before testing the rule.

Practice example: For Coding Decoding, choose the pair with the same relation as Book : Reading.

Solution: A book is used for reading, and a pen is used for writing.

If every letter is moved two places backward, how will MANGO be coded?
If the value of a word is the sum of alphabetical positions, what is the value of FARM?
If every letter is moved four places forward, how will COLD be coded?

Learn the shortcut first

Shortcut before you solve

Most coding questions become simpler once you identify the pattern type.

Faster solving steps

Use this 4-step method before solving to keep your thinking fast and repeatable.

Step 1 Identify relation

Spot the pattern, relationship, or core idea first.

Step 2 Apply same pattern

Use the same rule instead of re-solving from scratch.

Step 3 Eliminate wrong options

Remove confusing choices before comparing the last few.

Step 4 Confirm final answer

Pick the option that matches the shortcut most cleanly.

Practice Questions

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Now apply the trick on real questions

Use the shortcut above before solving these questions

Check for position changes, alphabet jumps, or reverse order before testing every option.

Tip: Write A = 1 to Z = 26 only when needed. Many questions are solved by spotting direction or fixed jumps.

Step 1

Each letter is shifted by +1.

Step 2

D becomes E, O becomes P, and G becomes H.

Rule

Find the change in the first word, then apply the same change to the second word.

3-second trick

Test the first two letters only. If the pattern fits, finish the word quickly.

Trap to avoid

Do not assume the whole word changes randomly if the first letters show a fixed pattern.

Correct answer

EPH

Thinking path

CAT to DBU shows a +1 shift in every letter.
The same shift is applied to DOG.
So the coded form becomes EPH.

Final answer: EPH

Why this is fast: Once the shift is clear, the rest of the word follows automatically.

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Q1 Easy

If vowels have value 3 and consonants have value 1, what is the value of IDEA?