If PLANT is written as OKZMS, how is TREE written in that code?
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Correct answer: (D) SQDD
Explanation
Each letter −1: T→S, R→Q, E→D, E→D → SQDD.
DSSSB TGT / PGT · Reasoning
Coding-Decoding Previous Year Questions
13 Coding-Decoding (Reasoning) questions asked in DSSSB TGT / PGT previous year papers, each with the correct answer and explanation. Read them free on UTpaper, or attempt the full papers as timed online tests.
- 13 questions
- Official answer key
- Free
Other Reasoning topics
If GOLD is written as HNMC, how is SILVER written in that code?
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Correct answer: (A) THMUFQ
Explanation
Letters alternately +1 and −1: S+1=T, I−1=H, L+1=M, V−1=U, E+1=F, R−1=Q → THMUFQ.
If CAT is written as XZG, how is DOG written in that code?
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Correct answer: (D) WLT
Explanation
Opposite letters (A↔Z, B↔Y ...): D→W, O→L, G→T → WLT.
If LIGHT is coded as 56, how is NIGHT coded?
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Correct answer: (A) 58
Explanation
Sum of positions: L12+I9+G7+H8+T20=56. NIGHT: 14+9+7+8+20 = 58.
If ROAD is written as URDG, how is SWAN written in the same code?
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Correct answer: (C) VZDQ
Explanation
Each letter +3: S→V, W→Z, A→D, N→Q → VZDQ.
If PAPER is written as REPAP, how is STONE written in that code?
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Correct answer: (B) ENOTS
Explanation
The word is simply reversed → STONE → ENOTS.
In a certain code, WATER is written as YCVGT. How is FIRE written in that code?
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Correct answer: (A) HKTG
Explanation
Each letter +2: F→H, I→K, R→T, E→G → HKTG.
In a code language, 'ka pa ni' means 'bring red book', 'ni ti sa' means 'red is good' and 'pa ja' means 'book shop'. What is the code for 'bring'?
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Correct answer: (D) ka
Explanation
'red' = ni (common to 1st and 2nd), 'book' = pa (common to 1st and 3rd). So 'bring' = ka.
In a certain code language, DELHI is written as EFMIJ. How is MUMBAI written in that code?
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Correct answer: (A) NVNCBJ
Explanation
Each letter is moved +1: M→N, U→V, M→N, B→C, A→B, I→J → NVNCBJ.
If BOOK is coded as 43, then how is PEN coded?
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Correct answer: (C) 35
Explanation
Sum of letter positions: B(2)+O(15)+O(15)+K(11)=43. PEN = 16+5+14 = 35.
In a certain code language, ‘LOMQG’ is written as ‘16’, ‘WTQMC’ is written as ‘19’. What
is the code for ‘LSOMI’ in that code language?
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Correct answer: (C) 17
Explanation
The code is the sum of the letter positions divided by 4: LOMQG = 12+15+13+17+7 = 64, 64/4 = 16; WTQMC = 76/4 = 19. LSOMI = 12+19+15+13+9 = 68, 68/4 = 17.
In a certain code language, ‘STOPWARS’ is written as ‘POTSSRAW’, ‘LOGIPERT’ is
written as ‘IGOLTREP’. What is the code for ‘LAPTOPST’ in that code language?
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Correct answer: (D) T PALTSPO
Explanation
Each word is split into two 4-letter halves and each half is reversed: STOP to POTS, WARS to SRAW. LAPT becomes TPAL and OPST becomes TSPO, giving TPALTSPO.
A question is given, followed by two statements labelled I and II. Identify which of the statements is/are sufficient to answer the question.
Question: What will be the code of 'HUMAN' in the same language?
Statements:
I. 'FAHAD' is coded as '61814'.
II. 'WATER' is coded as '23120518'.
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Correct answer: (C) Information in either statement I alone or statement II alone is sufficient to answer the question.
Explanation
Both statements show the same rule: each letter is written as its alphabet position (F=6, A=1, H=8 ...; W=23, A=1, T=20 ...). Either statement alone gives HUMAN = 82113114.
How to use these DSSSB TGT / PGT Reasoning questions
Every question here was asked in a real DSSSB TGT / PGT paper; the paper and shift are shown on the card, and the number opens the question on its own page. Try each one before tapping Show answer, then attempt the full DSSSB TGT / PGT papers as timed tests to check your speed under exam conditions.