SSC CGL Reasoning – Coding–Decoding – Level 1 · Warm-up · Tier I Level

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SSC CGL Reasoning – Coding–Decoding – Level 1 · Warm-up · Tier I Level – 12 questions, subject: General Intelligence & Reasoning. Every question has the correct answer with a one-line explanation; tap "Show Answer". Free practice for TNPSC, UPSC, SSC, Bank and RRB exams – Shanmugam IAS Academy, Coimbatore.

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1.  
Letter codingIf BOOK is coded as DQQM, how is DESK coded?

Correct Answer: B [FGUM]

Explanation:

Each letter moves 2 forward: B→D, O→Q, K→M.

2.  
Number codingIf ACE is written as 135, how is BDF written?

Correct Answer: C [246]

Explanation:

Each letter is written as its position: B = 2, D = 4, F = 6.

3.  
Letter codingIf MILK is coded as LHKJ, how is JUICE coded?

Correct Answer: D [ITHBD]

Explanation:

Each letter moves 1 back: J→I, U→T, I→H, C→B, E→D.

4.  
Letter codingIf LAMP is written as PMAL, how is MOUSE written?

Correct Answer: A [ESUOM]

Explanation:

The word is simply written backwards: MOUSE → ESUOM.

5.  
SubstitutionIf red is called blue, blue is called green, green is called yellow and yellow is called white, what is the colour of a clear sky?

Correct Answer: D [green]

Explanation:

A clear sky is blue, and blue is called green.

6.  
Letter codingIn a code, each letter is replaced by its opposite letter (A↔Z, B↔Y, C↔X …). How is BUS written?

Correct Answer: A [YFH]

Explanation:

B(2) ↔ Y(25), U(21) ↔ F(6), S(19) ↔ H(8): each pair adds up to 27.

7.  
DecodingIn a code, each letter is replaced by the next letter of the alphabet. Which word is written as UBCMF?

Correct Answer: B [TABLE]

Explanation:

Decode by moving each letter one back: U→T, B→A, C→B, M→L, F→E.

8.  
Number codingIf DOG = 26 and CAT = 24, then PIG = ?

Correct Answer: C [32]

Explanation:

Add the positions: D4 + O15 + G7 = 26, C3 + A1 + T20 = 24, so P16 + I9 + G7 = 32.

9.  
Number codingIf 1 = A, 2 = B, 3 = C and so on, how is BEAD written?

Correct Answer: D [2514]

Explanation:

B = 2, E = 5, A = 1, D = 4 → 2514.

10.  
Number codingIf RATE is written as 1234 and TEAR as 3421, how is EAT written?

Correct Answer: A [423]

Explanation:

From RATE: R = 1, A = 2, T = 3, E = 4 (TEAR = 3421 confirms it).

11.  
Symbol codingIn a code, M = @, A = #, T = % and E = +. How is TEAM written?

Correct Answer: B [% + # @]

Explanation:

Replace letter by letter: T = %, E = +, A = #, M = @.

12.  
SubstitutionIf cook is called butler, butler is called manager, manager is called teacher and teacher is called clerk, who teaches in a class?

Correct Answer: C [clerk]

Explanation:

The person who teaches is a teacher, and a teacher is called clerk.

➤ Full notes, shortcuts and every answer explained – SSC CGL 2026 General Intelligence & Reasoning book (₹149): www.shanmugamiasacademy.in/study-materials/ssc-cgl-general-intelligence-reasoning

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