SSC CGL Reasoning – Coding–Decoding – Level 2 · Exam Level · Tier I Sprint

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SSC CGL Reasoning – Coding–Decoding – Level 2 · Exam Level · Tier I Sprint – 15 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 PLAY is coded as ZBMQ, how is MILK coded?

Correct Answer: D [LMJN]

Explanation:

Write the word backwards (YALP) and move each letter 1 forward (ZBMQ).

2.  
Letter codingIf BEAT is coded as CGDX, how is SOAP coded?

Correct Answer: C [TQDT]

Explanation:

The letters move +1, +2, +3, +4: S→T, O→Q, A→D, P→T.

3.  
Letter codingIf MANGO is coded as NZOFP, how is LEMON coded?

Correct Answer: A [MDNNO]

Explanation:

The moves alternate +1, −1, +1, −1, +1: L→M, E→D, M→N, O→N, N→O.

4.  
Number codingIf Z = 1, Y = 2, X = 3 and so on (counting from the end), and the numbers of the letters are written one after another, how is FIG written?

Correct Answer: B [211820]

Explanation:

Backward position = 27 − position: F = 21, I = 18, G = 20 → 211820.

5.  
Number codingIf CAB = 6 and BAD = 7, then FED = ?

Correct Answer: A [15]

Explanation:

Sum of positions: C3 + A1 + B2 = 6, B2 + A1 + D4 = 7; F6 + E5 + D4 = 15.

6.  
DecipheringIn a code, '2 4 7' means 'spread red carpet', '2 5 6' means 'dust one carpet' and '6 8 7' means 'one red flower'. Which digit means 'flower'?

Correct Answer: B [8]

Explanation:

carpet = 2 (in sentences 1 and 2), red = 7 (1 and 3), one = 6 (2 and 3).

7.  
DecodingIf CHAIR is coded as DIBJS, which word is coded as TBGF?

Correct Answer: D [SAFE]

Explanation:

Coding moves each letter 1 forward, so decoding moves each letter 1 back: T→S, B→A, G→F, F→E.

8.  
Letter codingIf SMILE is written as MSLIE, how is CLOUD written?

Correct Answer: C [LCUOD]

Explanation:

Letters are swapped in pairs (SM → MS, IL → LI) and the last letter stays: CL → LC, OU → UO, D.

9.  
Letter codingIf CANDLE is written as NACELD, how is BRIDGE written?

Correct Answer: B [IRBEGD]

Explanation:

Each half is written backwards: CAN → NAC, DLE → ELD.

10.  
Letter codingIf MANGO is coded as LTMZN, how is FISH coded?

Correct Answer: D [SHRU]

Explanation:

Each letter becomes its opposite (M→N, A→Z, N→M, G→T, O→L) and the result is written backwards.

11.  
Number codingIf ACT = 48 and BOX = 82, then PEN = ?

Correct Answer: C [70]

Explanation:

Twice the sum of positions: (1 + 3 + 20) × 2 = 48, (2 + 15 + 24) × 2 = 82; (16 + 5 + 14) × 2 = 70.

12.  
Number codingIf MOTHER is written as 482516 and THEM as 2514, how is HOME written?

Correct Answer: A [5841]

Explanation:

M = 4, O = 8, T = 2, H = 5, E = 1, R = 6 (THEM = 2514 agrees).

13.  
Matrix codingA word is written using two matrices: a letter is given by its row number and then its column number (for example, a letter in row 0, column 3 is '03'). Which set of numbers can represent HOPE?

Correct Answer: A [30, 68, 99, 56]

Explanation:

Look up each pair: the correct set gives H, O, P, E; each other set has one pair that gives a different letter.

14.  
Trick SpotterIf WOLF is coded as DLOU, which check finds the rule fastest?

Correct Answer: C [Add the positions of each letter and its code letter]

Explanation:

W23 + D4 = 27, O15 + L12 = 27 … every pair adds up to 27, so the opposite-letter rule fits – and it is the only common rule that does.

15.  
Number codingIf BAG is written as 328, how is DEN written?

Correct Answer: B [5615]

Explanation:

Each letter is written as its position + 1: B = 2 + 1 = 3, A = 1 + 1 = 2, G = 7 + 1 = 8.

➤ 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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