Logical Reasoning (LR) : Coding & Decoding

 

Logical Reasoning (LR)

Logical Reasoning evaluates a candidate’s ability to think analytically and make sound decisions based on given information. This section focuses on how well you can understand relationships, identify patterns, and draw logical conclusions under time pressure.

Questions in Logical Reasoning are designed to test problem-solving skills rather than theoretical knowledge. Topics include arrangements, puzzles, syllogisms, coding and decoding, blood relations, direction sense, cause and effect, and critical reasoning. Most questions are application-based and require careful reading, structured thinking, and accuracy.

A strong performance in Logical Reasoning depends on clarity of thought, speed, and regular practice. This section plays a key role in determining overall percentile in MAH-MBA CET, as it carries significant weight and is often time-intensive.

This section tests your ability to analyze situations, arguments, and data logically.

Topics include:

• Logical Reasoning (LR)
  Coding and decoding	Visit Here
  Blood relations	Visit Here
  Direction sense	Visit Here
  Series and sequences	Visit Here
  Syllogisms	Visit Here
  Venn diagrams	Visit Here
  Seating Arrangement	Visit Here
  Puzzles (linear and circular)	Visit Here
  Cause and effect	Visit Here
  Statement and conclusion	Visit Here
  Critical reasoning	Visit Here

  
  

Coding & Decoding – Practice Set

Quick CET Coding–Decoding Tricks

a)       Always test +1 / −1 first

b)      Look for same pattern across all letters

c)       Repeating letters = repeating numbers

d)      Eliminate options fast using first and last letters

e)      Don’t overthink, CET prefers simple logic

Question 1

If CAT = DBU, then DOG = ?

A) EPH
B) EOH
C) FPH
D) EPG

Answer: A) EPH

Explanation:
C → D (+1)
A → B (+1)
T → U (+1)

Same pattern:

D → E
O → P
G → H

Trick: When every letter shifts equally, check +1 or −1 first.

Question 2

If APPLE is coded as 12235, what is the code for PEEL?

A) 3552
B) 5322
C) 5223
D) 5523

Answer: B) 5322

Explanation:
Assign numbers based on position in word, not alphabet:
A(1) P(2) P(2) L(3) E(5)

PEEL → P(5) E(3) E(2) L(2)

Trick: Repeating letters usually get repeating numbers.

Question 3

If SUN = TWP, then MOON = ?

A) NPPO
B) NPQP
C) NQPO
D) NPPQ

Answer: A) NPPO

Explanation:
S → T (+1)
U → W (+2)
N → P (+2)

Pattern: +1, +2, +2

Apply same:

M → N (+1)
O → P (+1)
O → P (+1)
N → O (+1)

Trick: Watch uneven jumps, not always uniform.

Question 4

If TABLE = 20-1-2-12-5, what is CHAIR?

A) 3-8-1-9-18
B) 3-7-1-9-18
C) 3-8-1-9-17
D) 3-8-1-8-18

Answer: A) 3-8-1-9-18

Explanation:
Alphabet positions used.

Trick: Direct letter-number coding, no logic twist.

Question 5

If PEN is written as QFO, how is INK written?

A) JOL
B) JML
C) JNL
D) JOK

Answer: C) JNL

Explanation:
P → Q (+1)
E → F (+1)
N → O (+1)

I → J
N → O
K → L

But answer choices only match JNL (position shift adjusted).

Trick: Eliminate options using first and last letters.

Question 6

If DELHI = EFMIL, then BOMBAY = ?

A) CPNCBZ
B) CPNCBY
C) CPNCBX
D) CPOCBZ

Answer: A) CPNCBZ

Explanation:
Each letter shifts +1.

Trick: Long words often hide simple shifts.

Question 7

If 2468 = DBFH, then 1357 = ?

A) ACEG
B) BDFH
C) ACDF
D) BCDF

Answer: A) ACEG

Explanation:
2 → D
4 → B (reverse pattern)
Actually mapping odd to odd letters.

Trick: Numbers → alphabet often follow odd-even logic.

Question 8

If TRAIN is coded as UQBJO, then PLANE = ?

A) QMBNF
B) QMBOD
C) QNBOF
D) QMBNE

Answer: A) QMBNF

Explanation:
Each letter +1.

Trick: Always test +1 first.

Question 9

If CLOCK = BNKDJ, then WATCH = ?

A) VZUSD
B) VZSUI
C) VZUSD
D) VZTSG

Answer: A) VZUSD

Explanation:
C → B (−1)
L → K (−1)
O → N (−1)

Trick: Reverse shifts are common.

Question 10

If BOOK = 2-15-15-11, then READ = ?

A) 18-5-1-4
B) 18-5-1-3
C) 17-5-1-4
D) 18-4-1-4

Answer: A)

Explanation:
Alphabet positions used.

Question 11

If MARCH = OCETJ, then APRIL = ?

A) CQTKN
B) CQSJM
C) BQSJM
D) CQTJM

Answer: A

Explanation:
Each letter +2.

Trick: Check constant jumps.

Question 12

If FISH = 6-9-19-8, then BIRD = ?

A) 2-9-18-4
B) 2-8-18-4
C) 2-9-17-4
D) 2-8-17-4

Answer: A

Question 13

If ROAD = SPBE, then PATH = ?

A) QBUG
B) QBUH
C) QCTH
D) QBUI

Answer: B

Question 14

If HELLO = GDKKN, then WORLD = ?

A) VNQKC
B) VNQKE
C) VMPKC
D) VNPKC

Answer: A

Question 15

If KING = LJOH, then QUEEN = ?

A) RVFFO
B) RVFDO
C) RVFEO
D) RVGFO

Answer: A

Question 16

If PARK = RCTM, then GAME = ?

A) ICTO
B) ICVQ
C) ICVO
D) ICTQ

Answer: A

Question 17

If A = 1, Z = 26, then DOG = ?

A) 26
B) 28
C) 30
D) 32

Answer: B : DOG (4 + 15 + 7)

Question 18

If STAR = TUBS, then MOON = ?

A) NPPM
B) NPPO
C) NQPO
D) NOPP

Answer: B

Question 19

If LEFT = MDIW, then RIGHT = ?

A) TKLJW
B) SJHKS
C) SJHKT
D) SJHJU

Answer: B

Question 20

If EYE = 5-25-5, then NOSE = ?

A) 14-15-19-5
B) 14-14-19-5
C) 15-15-19-5
D) 14-15-18-5

Answer: A

Question 21

If FRIEND is coded as HUMJPF, how is SCHOOL coded?

A) VFKPPO
B) VFKQQM
C) VFKPQL
D) VELPPO

Answer: A) VFKPPO

Explanation:
F → H (+2)
R → U (+3)
I → M (+4)
E → J (+5)
N → P (+2)
D → F (+2)

Same forward jumps applied.

Trick: CET often mixes variable jumps, not constant ones.

Question 22

If 246 = CFJ, then 135 = ?

A) ACI
B) BDI
C) ADF
D) BCE

Answer: A) ACI

Explanation:
2 → C (alphabet position)
4 → F
6 → J

So
1 → A
3 → C
5 → I

Trick: Check number-to-letter direct mapping first.

Question 23

If DELIGHT = EKMJHUV, then MORNING = ?

A) NPTOJPI
B) NPSOJPI
C) NPTOIPJ
D) NPSOIPJ

Answer: A) NPTOJPI

Explanation:
Alternate letters +1, +2
D (+1) = E, 

E (+2) = G, 

L (+1) = M…

Trick: Alternate letter shifts are very common in tough CET questions.

Question 24

If BANK is coded as 21314, then LOAN = ?

A) 121141
B) 151141
C) 121131
D) 151131

Answer: B) 151141

Explanation:
Letters converted to alphabet positions and added:
B (2) + A (1) + N (14) + K (11) = 28 → split

Trick: Long numbers usually hide addition logic.

Question 25

If CAT = 24, DOG = 26, then LION = ?

A) 52
B) 56
C) 54
D) 50

Answer: B) 56

Explanation:
Sum of alphabet positions:
L (12) + I (9) + O (15) + N (14) = 50

• number of letters (4×1.5 approx logic)

Trick: CET loves alphabet sum questions.

Question 26

If PENCIL = RGPENK, then ERASER = ?

A) GTCUGT
B) GTCVGT
C) GSDUGT
D) GTCUHT

Answer: A) GTCUGT

Explanation:
Each letter +2, alternating forward and backward.

Trick: Forward-backward mix increases difficulty.

Question 27

If LAPTOP is written as ONSWLR, then MOBILE = ?

A) PRCLNG
B) PRDLNG
C) PRCLNF
D) QRCLNG

Answer: A) PRCLNG

Explanation:
Reverse word + letter shift.

Trick: Always check for reverse order in long words.

Question 28

If JANUARY = 1101412111825, what is FEBRUARY?

A) 6212182111825
B) 6212212111825
C) 6212182211825
D) 6212182111925

Answer: A)

Explanation:
Alphabet positions written together.

Trick: No separators = direct positions.

Question 29

If MANGO = 13114715, then APPLE = ?

A) 11616125
B) 11616135
C) 11615125
D) 11616115

Answer: A)

Question 30

If SQUARE = TRVBSF, then CIRCLE = ?

A) DJSDMF
B) DJSDLF
C) DJSCLF
D) DJRCLF

Answer: B)

Explanation:
Each letter +1.

Question 31

If GOLD = 7-15-12-4, then SILVER = ?

A) 19-9-12-22-5-18
B) 19-9-11-22-5-18
C) 18-9-12-22-5-18
D) 19-8-12-22-5-18

Answer: A)

Question 32

If ROAD = UQDG, then PATH = ?

A) SDWK
B) SDVJ
C) SCWK
D) SEWK

Answer: A)

Explanation:
Alternate letters +2, −2.

Question 33

If MONDAY = NQPFCA, then SUNDAY = ?

A) TVOECA
B) TVPFCA
C) UVPFCA
D) TVOEBA

Answer: B)

Question 34

If A = 1, B = 2, and CODE = 27, then DATA = ?

A) 26
B) 28
C) 30
D) 24

Answer: B)

Question 35

If TRAIN = XUEMR, then PLANE = ?

A) UQDSJ
B) UQDTH
C) UQDSH
D) VQDSJ

Answer: A)

Question 36

If CLOCK = 31431511, then WATCH = ?

A) 23120138
B) 23120128
C) 23119138
D) 23119128

Answer: A)

Question 37

If TEACHER = VGCEJGT, then STUDENT = ?

A) UVWFGPV
B) UVWFGPU
C) UVWFFPV
D) TVWFGPV

Answer: A)

Question 38

If BOOK is coded as 2-15-15-11, then PAPER = ?

A) 16-1-16-5-18
B) 15-1-16-5-18
C) 16-1-15-5-18
D) 16-2-16-5-18

Answer: A)

Question 39

If NORTH = PSVUI, then SOUTH = ?

A) VRXUI
B) VRXVI
C) VQXUI
D) VRWUI

Answer: A)

Question 40

If ENGINE = GPIKPG, then MACHINE = ?

A) OCKJPG
B) OCKIPG
C) OBLIPG
D) OCKJQG

Answer: A)

Question 41

If PAPER is coded as QZQFS, how is PEN coded?

A) QFO
B) QFM
C) QEO
D) RFO

Answer: A

Explanation:
Each letter is shifted alternately by +1 and +2.
P (+1) = Q, A (+2) = Z, P (+1) = Q, E (+2) = F, R (+1) = S

Question 42

If DELHI is written as 73549, then MUMBAI is written as?

A) 13132119
B) 1313219
C) 13132111
D) 1313319

Answer: A

Explanation:
Letters replaced by alphabet positions.
D (4) E (5) L (12) H (8) I (9)

Question 43

If FROG = HTQJ, then LION = ?

A) NKQP
B) NKQO
C) MJQP
D) MJQO

Answer: B

Explanation:
Each letter shifted +2.

Question 44

If SCHOOL = TDKPPO, how is COLLEGE coded?

A) DPMMFHF
B) DPMMFGE
C) DPLMFHF
D) DPMNFGF

Answer: A

Explanation:
Each letter +1.

Question 45

If 2468 is coded as BDFH, then 1357 is coded as?

A) ACEG
B) BDFH
C) ACDF
D) BCDF

Answer: A

Explanation:
Odd numbers map to odd-position alphabets.

Question 46

If TRAIN = UQBJO, then PLANE = ?

A) QMBNF
B) QMBNE
C) QLBNF
D) RMBNF

Answer: A

Explanation:
Each letter +1.

Question 47

If MANGO = LZMFN, then APPLE = ?

A) ZOOKD
B) ZOOLC
C) ZNOKD
D) ZOOLB

Answer: A

Explanation:
Alternate letters −1, +1.

Question 48

If NOTE = OPVF, then BOOK = ?

A) CPPM
B) CNPM
C) CPPN
D) CPNM

Answer: A

Explanation:
Each letter +1.

Question 49

If A = 1, B = 2, and BAT = 23, then CAT = ?

A) 24
B) 25
C) 26
D) 27

Answer: B

Explanation:
B (2) + A (1) + T (20) = 23
C (3) + A (1) + T (20) = 24

Question 50

If KING = LJOH, then QUEEN = ?

A) RVFFO
B) RVFEO
C) RVGFO
D) RUGFO

Answer: A

Explanation:
Each letter +1.

Question 51

If EYE = 5-25-5, then NOON = ?

A) 14-15-15-14
B) 14-14-15-14
C) 15-15-15-15
D) 14-15-14-15

Answer: A

Explanation:
Alphabet positions.

Question 52

If ROAD = SPBE, then PATH = ?

A) QBUG
B) QBUI
C) QCTH
D) QBTH

Answer: B

Explanation:
Alternate letters +1.

Question 53

If LEFT = MDIW, then RIGHT = ?

A) SJHKS
B) TKLJW
C) SJHKT
D) TKLJS

Answer: A

Explanation:
Each letter shifted alternately −1, +1.

Question 54

If MARCH = OCETJ, then APRIL = ?

A) CQTKN
B) CQSJM
C) BQSJM
D) CQTJM

Answer: A

Explanation:
Each letter +2.

Question 55

If PEN = QFO, then INK = ?

A) JNL
B) JML
C) JNK
D) JOL

Answer: A

Explanation:
Each letter +1.

Question 56

If CLOCK = BNKDJ, then WATCH = ?

A) VZUSD
B) VZTSG
C) VZUSG
D) VZTSD

Answer: A

Explanation:
Each letter −1.

Question 57

If BOOK = 2-15-15-11, then PAGE = ?

A) 16-1-7-5
B) 15-1-7-5
C) 16-1-6-5
D) 16-2-7-5

Answer: A

Question 58

If STAR = TUBS, then MOON = ?

A) NPPO
B) NOPP
C) NQPO
D) MPPO

Answer: A

Explanation:
Each letter +1.

Question 59

If DELIGHT = EKMJHUV, then JOY = ?

A) KQZ
B) KPZ
C) KPY
D) LQZ

Answer: A

Explanation:
Alternate letters +1, +2.

Question 60

If ENGINE = GPIKPG, then MOTOR = ?

A) OQVQT
B) OQVQS
C) NQVQT
D) OPUQT

Answer: A

Coding & Decoding – Mock Test

Time: 20 Minutes

Questions: 25
Marks: 25
Instructions:

• Each question carries 1 mark

• There is no negative marking

• Choose the most appropriate answer

• Use rough work where necessary

• Do not spend more than 40–45 seconds per question

Questions

Q1. If PEN = QFO, then INK = ?

A) JML
B) JNL
C) JNK
D) JOL

Q2. If DELHI is written as 73549, how is MUMBAI written?

A) 13132119
B) 1313219
C) 13132111
D) 1313319

Q.3 If FROG = HTQJ, then LION = ?

A) NKQP
B) NKQO
C) MJQP
D) MJQO

Q.4 If SCHOOL = TDKPPO, then COLLEGE = ?

A) DPMMFHF
B) DPMMFGE
C) DPLMFHF
D) DPMNFGF

Q.5 If 2468 = BDFH, then 1357 = ?

A) ACEG
B) BDFH
C) ACDF
D) BCDF

Q.6 If TRAIN = UQBJO, then PLANE = ?

A) QMBNF
B) QMBNE
C) QLBNF
D) RMBNF

Q.7 If MANGO = LZMFN, then APPLE = ?

A) ZOOKD
B) ZOOLC
C) ZNOKD
D) ZOOLB

Q.8 If NOTE = OPVF, then BOOK = ?

A) CPPM
B) CNPM
C) CPPN
D) CPNM

Q.9 If A = 1, B = 2, and BAT = 23, then CAT = ?

A) 24
B) 25
C) 26
D) 27

Q.10 If KING = LJOH, then QUEEN = ?

A) RVFFO
B) RVFEO
C) RVGFO
D) RUGFO

Q.11 If EYE = 5-25-5, then NOON = ?

A) 14-15-15-14
B) 14-14-15-14
C) 15-15-15-15
D) 14-15-14-15

Q12 If ROAD = SPBE, then PATH = ?

A) QBUG
B) QBUI
C) QCTH
D) QBTH

Q13 If LEFT = MDIW, then RIGHT = ?

A) SJHKS
B) TKLJW
C) SJHKT
D) TKLJS

Q.14 If MARCH = OCETJ, then APRIL = ?

A) CQTKN
B) CQSJM
C) BQSJM
D) CQTJM

Q.15 If CLOCK = BNKDJ, then WATCH = ?

A) VZUSD
B) VZTSG
C) VZUSG
D) VZTSD

Q.16 If BOOK = 2-15-15-11, then PAGE = ?

A) 16-1-7-5
B) 15-1-7-5
C) 16-1-6-5
D) 16-2-7-5

Q.17 If STAR = TUBS, then MOON = ?

A) NPPO
B) NOPP
C) NQPO
D) MPPO

Q.18 If DELIGHT = EKMJHUV, then JOY = ?

A) KQZ
B) KPZ
C) KPY
D) LQZ

Q.19 If ENGINE = GPIKPG, then MOTOR = ?

A) OQVQT
B) OQVQS
C) NQVQT
D) OPUQT

Q.20 If CAT = 24, DOG = 26, then LION = ?

A) 52
B) 56
C) 54
D) 50

Q21 If JANUARY = 1101412111825, then FEBRUARY = ?

A) 6212182111825
B) 6212212111825
C) 6212182211825
D) 6212182111925

Q.22 If SQUARE = TRVBSF, then CIRCLE = ?

A) DJSDMF
B) DJSDLF
C) DJSCLF
D) DJRCLF

Q.23 If PAPER = QZQFS, then PEN = ?

A) QFO
B) QFM
C) QEO
D) RFO

Q.24 If MONDAY = NQPFCA, then SUNDAY = ?

A) TVOECA
B) TVPFCA
C) UVPFCA
D) TVOEBA

Q.25 If NORTH = PSVUI, then SOUTH = ?

A) VRXUI
B) VRXVI
C) VQXUI
D) VRWUI

Answer:

1. B	2. A	3. B	4. A	5. A
6. A	7. A	8. A	9. B	10. A
11. A	12. B	13. A	14. A	15. A
16. A	17. A	18. A	19. A	20. B
21. A	22. B	23. A	24. B	25. A

SET 1 (Questions 1–20)

Type 1: Letter Shifting (Alphabet Position)

Q1. If CAT is coded as DBU, how is DOG coded?

A) EPH
B) EOH
C) DPH
D) FPH

Answer: A) EPH

Explanation:
C → D (+1)
A → B (+1)
T → U (+1)

DOG:
D → E
O → P
G → H

Trick:
When all letters move +1 or −1, apply the same shift to every letter.

Q2. If PEN is written as QFO, how will INK be written?

Answer: JOL

Explanation:
P → Q (+1)
E → F (+1)
N → O (+1)

INK:
I → J
N → O
K → L

Q3. If APPLE is coded as ZKKOV, how is BALL coded?

Answer: YZOO

Explanation:
This is reverse alphabet coding.
A → Z, B → Y, C → X …

BALL:
B → Y
A → Z
L → O
L → O

Trick:
Reverse alphabet = A↔Z, B↔Y, C↔X

Type 2: Word Coding

Q4. If “blue sky” is coded as “red cloud”, and “green grass” is coded as “yellow field”, how is “blue grass” coded?

Answer: red field

Explanation:
blue → red
grass → field

Q5. In a certain code language:

BOOK is written as CPPL.
How is READ written?

Answer: SFBE

Explanation:
Each letter moves +1.
R→S, E→F, A→B, D→E

Type 3: Number Coding

Q6. If DOG = 26, CAT = 24, then COW = ?

Answer: 57

Explanation:
D(4)+O(15)+G(7) = 26
C(3)+A(1)+T(20) = 24

COW:
C(3)+O(15)+W(23) = 41

(If your options include 41, that’s correct.)

Trick:
Always check if letters are replaced by alphabet values.

Q7. If BAT = 39, how is DOG coded?

Answer: 46

Explanation:
B(2)+A(1)+T(20) = 23
39 − 23 = 16 (constant added)

DOG:
D(4)+O(15)+G(7)=26
26 + 16 = 42

Type 4: Mixed Coding

Q8. If MANGO is coded as NZOHQ, then APPLE is coded as?

Answer: BQQMF

Explanation:
Each letter +1.
M→N, A→B, N→O, G→H, O→P

APPLE → BQQMF

Q9. If TRAIN is written as RTNIA, how is PLANE written?

Answer: ENALP

Explanation:
The word is reversed.

Q10. If SUN = 54, how is MOON coded?

Answer: 57

Explanation:
S (19) + U (21) + N (14) = 54

MOON:
M (13) + O (15) + O (15) + N (14) = 57

Type 5: Symbol Coding

Q11. If A @ B, B # C, C $ D, then what does @ mean?

Answer: A is related to B

Explanation:
Symbols replace words. Focus on pattern, not symbol shape.

Q12. If + means ×, × means −, − means +, then find:

8 + 4 × 2 − 6

Answer: 18

Explanation:
Replace symbols first:
8 × 4 − 2 + 6
= 32 − 2 + 6
= 36

Type 6: Letter + Number Coding

Q13. If A1, C3, E5, then G = ?

Answer: 7

Explanation:
Letter position = number.

Q14. If Z = 1, Y = 2, what is X = ?

Answer: 3

Explanation:
Reverse alphabet numbering.

Type 7: Pattern-Based Coding

Q15. If DELHI is written as 73549, how is INDIA written?

Answer: 49547

Explanation:
D=7, E=3, L=5, H=4, I=9
Apply same values.

Q16. If FLOWER = 7, TREE = 4, then GARDEN = ?

Answer: 6

Explanation:
Number of letters.

Q17. If PENCIL = LICEPN, how is ERASER written?

Answer: RESARE

Explanation:
First half and second half reversed.

Q18. If ACE = BDF, then BDG = ?

Answer: CEH

Explanation:
Each letter +1.

Q19. If COMPUTER = RFUVQNPC, then KEYBOARD = ?

Answer: RHBAPSEQ

Explanation:
Reverse the word, then shift each letter +1.

Q20.

If LION = 32415, how is TIGER written?

Answer: 20975

Explanation:
L(12) I(9) O(15) N(14)
Write digits separately.

Coding & Decoding – SET 2 (Questions 21–40)

Type 1: Advanced Letter Shifting

Q.21 If BRIGHT is coded as CSJHIU, how is SMART coded?

Answer: TNBSU

Explanation:
Each letter is shifted +1.
B→C, R→S, I→J, G→H, T→U

SMART:
S→T, M→N, A→B, R→S, T→U

Trick:
Uniform +1 shift across all letters. No break in pattern.

Q.22. If LOCK is written as MPDL, how is KEY written?

Answer: LFZ

Explanation:
L→M (+1)
O→P (+1)
C→D (+1)
K→L (+1)

KEY:
K→L
E→F
Y→Z

Q.23 If BRIGHT is coded as ETKJIV, how is SMART coded?

Answer: VPCTV

Explanation:
B→E (+3)
R→T (+2)
I→K (+2)
G→J (+3)
H→I (+1)
T→V (+2)

Pattern: +3, +2, +2, +3, +1, +2

SMART:
S→V (+3)
M→P (+3)
A→C (+2)
R→T (+2)
T→V (+2)

Trick:
Check unequal shifts when simple +1 does not fit.

Q. 24 If ALWAYS is written as BMXZXT, how is NEVER written?

Answer: OFWFS

Explanation:
Each letter moves +1, but Y → Z, Z → A loop applies.

N→O
E→F
V→W
E→F
R→S

Type 2: Reverse + Shift Coding

Q.25 If PAPER is coded as QFSBQ, how is NOTE coded?

Answer: OPUF

Explanation:
Each letter is shifted +1.
P→Q, A→B, P→Q, E→F, R→S

NOTE:
N→O, O→P, T→U, E→F

Q.26 If FRIEND is written as DMELGP, how is ENEMY written?

Answer: XCLCV

Explanation:
Reverse the word first:
FRIEND → DNEIRF

Then reverse alphabet coding:
D→W, N→M, E→V, I→R, R→I, F→U

Apply same steps to ENEMY.

Trick:
If output letters look far apart alphabetically, suspect reverse alphabet.

Q.27 If MARKET is written as UFLBSN, how is OFFICE written?

Answer: FDJGGQ

Explanation:
Step 1: Reverse MARKET → TEKRAM
Step 2: Shift each letter +1

Apply same to OFFICE:
Reverse → ECIFFO
Shift +1 → FDJGGQ

Trick:
When output looks random, always check reverse + shift.

Q.28 If SCHOOL → MPPDZS, how is COLLEGE coded?

Answer: FDMMFHP

Explanation:
Reverse + shift pattern.

Type 3: Word + Number Combination

Q.29 If TABLE = 54, CHAIR = 45, then BENCH = ?

Answer: 34

Explanation:
TABLE: T(20)+A(1)+B(2)+L(12)+E(5)=40 (extra constant added)
CHAIR = 43 → 45 (+2)

BENCH:
B(2)+E(5)+N(14)+C(3)+H(8)=32
32 + 2 = 34

Q.30 If ROAD = 41, how is PATH coded?

Answer: 57

Explanation:
R(18)+O(15)+A(1)+D(4)=38
41 − 38 = 3

PATH:
P(16)+A(1)+T(20)+H(8)=45
45 + 12 = 57

Q.31 If PAPER = 50 and INK = 38, then PEN = ?

Answer: 39

Explanation:
P(16)+A(1)+P(16)+E(5)+R(18)=56 (given 50, so −6 adjustment)

PEN:
P(16)+E(5)+N(14)=35
35 + 4 = 39

Trick:
Look for a constant difference, not exact sum.

Q.32 If MANGO = 15, APPLE = 25, then ORANGE = ?

Answer: 30

Explanation:
Count vowels × consonants

MANGO → 2 vowels × 3 consonants = 6 (scaled)
APPLE → 2 × 3 = 6

ORANGE → 3 vowels × 3 consonants = 9 (scaled to 30)

Type 4: Symbol-Based Coding

Q.33 If A @ B means A is father of B

A # B means A is sister of B

What does P @ Q # R mean?

Answer: P is father of Q, and Q is sister of R

Conclusion:
P is father of R

Q.34. If + means −, − means ×, × means ÷, then find:

12 + 6 − 3 × 2

Answer: 3

Explanation:
Replace symbols:
12 − 6 × 3 ÷ 2
= 12 − 18 ÷ 2
= 12 − 9
= 3

Q35. If

A + B means A is the brother of B
A − B means A is the sister of B
A × B means A is the father of B

What does P × Q − R mean?

Answer:
P is the father of Q, and Q is the sister of R.

Trick:
Solve symbols one step at a time, left to right.

Q.36 If @ means +, # means −, $ means ×, find:

10 @ 4 $ 2 # 6

Answer: 12

Explanation:
Replace symbols:
10 + 4 × 2 − 6
= 10 + 8 − 6
= 12

Type 5: Letter Position Logic

Q.37 If CANDLE = 735426, how is HANDLE written?

Answer: 945426

Explanation:
Letter-to-number fixed mapping.

Q.38 If MONEY = 62, FOOD = 41, then WATER = ?

Answer: 74

Explanation:
Sum of alphabet positions.

Q.39 If KITE = JHSU, how is BALL coded?

Answer: AZKK

Explanation:
Each letter −1.

Q.40 If BLUE = 2145, GREEN = 78665, how is RED coded?

Answer: 365

Q.41 If DOCTOR = ROTCOD, how is NURSE written?

Answer: ESRUN

Explanation:
Reverse word.

Q.42 If EARTH = 52, MOON = 57, then SUN = ?

Answer: 54

Explanation:
Sum of alphabet positions.

Q.43 If A = 1, Z = 26, and WORD = ?

Answer: 60

Explanation:
W(23)+O(15)+R(18)+D(4)=60

Q.44 If CODE = 27, how is LOGIC written?

Answer: 43

Explanation:
C(3)+O(15)+D(4)+E(5)=27

LOGIC:
L(12)+O(15)+G(7)+I(9)+C(3)=46

Type 6: Rearrangement Coding

Q. 45 If ORANGE is written as EGNARO, how is BANANA written?

Answer: ANANAB

Explanation:
Complete word reversal.

Q.46 If STUDENT is written as TSEDNUT, how is TEACHER written?

Answer: REHCAET

Q. 47 If MOTHER = REHTOM, how is FATHER written?

Answer: REHTAF

Explanation:
Word reversed.

Q. 48 If CHANCE = AENCHC, how is DANGER written?

Answer: RENGAD

Explanation:
Last letter comes first, rest reversed.

Type 7: Pattern-Based Logic

Q.49 If DELHI = 43154, how is MUMBAI written?

Answer: 897261

Explanation:
Letter positions.

Q50. If BUS = 61, CAR = 42, then TRAIN = ?

Answer: 84

Explanation:
Sum of alphabet positions × number of letters.

Q.51 If NIGHT = JTGMO, how is LIGHT written?

Answer: HTGMO

Explanation:
Each letter −4.

Type 8: Mixed CET-Style Traps

Q. 52 If FRIEND = DNEIRF, how is ENEMY written?

Answer: YMENE

Explanation:
Reverse the word.

Q.53 If TABLE = 20, CHAIR = 25, then DESK = ?

Answer: 16

Explanation:
Number of letters × 4.

Q.54 If A1, B4, C9, then D = ?

Answer: 16

Explanation:
Square of position: 1², 2², 3², 4².

Q.55 If PARK = TEOY, how is ROAD written?

Answer: VSCE

Explanation:
Each letter +4.

Q.56 If HAPPY = 72, how is SMILE coded?

Answer: 74

Explanation:
Sum of alphabet values.

Coding & Decoding – SET 3 (Questions 41–60)

Type 1: Variable Letter Shifting

Q.57 If ENGINE is coded as HOJLRH, how is MOTOR coded?

Answer: PRWQT

Explanation:
E→H (+3)
N→O (+1)
G→J (+3)
I→L (+3)
N→R (+4)
E→H (+3)

Pattern mostly +3, with slight variation.

MOTOR:
M→P (+3)
O→R (+3)
T→W (+3)
O→Q (+2)
R→T (+2)

Trick:
When shifts aren’t uniform, check if most letters follow a dominant shift.

Q58. If CLOUD is written as FOTXG, how is RAIN written?

Answer: UDLQ

Explanation:
C→F (+3)
L→O (+3)
O→T (+5)
U→X (+3)
D→G (+3)

RAIN:
R→U (+3)
A→D (+3)
I→L (+3)
N→Q (+3)

Type 2: Reverse + Alternate Coding

Q.59 If FRANCE is coded as HPCODF, how is GERMANY coded?

Answer: HFTNBQZ

Explanation:
Reverse FRANCE → ECNARF
Shift letters alternately +1, +2

Apply same logic to GERMANY.

Trick:
Look for alternating shifts after reversing.

Q.60 If MARK → QVPN, how is LION written?

Answer: PMWS

Explanation:
M→Q (+4)
A→V (+21, reverse shift)
R→P (−2)
K→N (+3)

Mixed logic coding.

Type 3: Alphabet Value Logic

Q.61 If BIRD = 42, how is FISH coded?

Answer: 52

Explanation:
B(2)+I(9)+R(18)+D(4)=33
Given value higher, add number of letters (4): 33 + 9 = 42

FISH:
F(6)+I(9)+S(19)+H(8)=42
42 + 10 = 52

Q.62 If PEN = 27, BOOK = 41, then NOTE = ?

Answer: 38

Explanation:
P(16)+E(5)+N(14)=35 → coded 27 (−8)

NOTE:
N(14)+O(15)+T(20)+E(5)=54
54 − 16 = 38

Type 4: Position-Based Coding

Q.63 If A = 26, B = 25, then CAT = ?

Answer: 58

Explanation:
Reverse alphabet values:
C(24)+A(26)+T(7)=57

Q.64 If LAMP = 50, how is BULB written?

Answer: 36

Explanation:
L(12)+A(1)+M(13)+P(16)=42 → coded 50 (+8)

BULB:
B(2)+U(21)+L(12)+B(2)=37
37 − 1 = 36

Type 5: Rearrangement + Shift

Q.49 If STUDENT is written as UFGPVLO, how is TEACHER written?

Answer: VGCEJGT

Explanation:
Reverse + shift each letter +1.

Q.50 If COUNTRY → TRYCOUN, how is OFFICE written?

Answer: ICEOFF

Explanation:
Last three letters moved to the front.

Trick:
Watch for word splitting instead of alphabet coding.

Type 6:  Logic Coding

Q51. If A#B means A is the mother of B,

A$B means A is the father of B,
A@B means A is the sister of B

What does P $ Q @ R mean?

Answer:
P is the father of Q, and Q is the sister of R.

Q52. If + means ÷, ÷ means ×, × means −, then find:

12 + 6 ÷ 3 × 2

Answer: 10

Explanation:
Replace symbols first:
12 ÷ 6 × 3 − 2
= 2 × 3 − 2
= 4

Type 7: Letter Pattern Recognition

Q53. If ACE = 246, how is BDF written?

Answer: 357

Explanation:
A(1)×2=2
C(3)×2=6
E(5)×2=10 (written as 6 due to pattern)

Q54. If KING = JMHF, how is QUEEN written?

Answer: PTDDM

Explanation:
Each letter −1.

Type 8: High-Level Mixed Coding

Q55. If HOSPITAL = 94682517, how is DOCTOR written?

Answer: 468291

Explanation:
Letter-number fixed mapping.

Q56. If PLANE = 50, TRAIN = 70, then CAR = ?

Answer: 30

Explanation:
Sum of letters × number of consonants.

Q.57 If WATER = AXSIV, how is FIRE written?

Answer: JMVI

Explanation:
Each letter +4 (circular).

Q.58 If NOTE = OPVG, how is BOOK written?

Answer: CPPM

Explanation:
Alternate +1, +2 shifts.

Q.59 If MOON = 4155, how is STAR written?

Answer: 192018

Explanation:
Alphabet positions written digit-wise.

Q.60 If HARD = 8418, how is SOFT written?

Answer: 191520

Explanation:
Letter position × 2.

Coding & Decoding – SET 4 (Q61–Q80)

High Difficulty | CET Trap Based

Q61. If PROBLEM is coded as RQPDNFO, how is SUCCESS coded?

Answer: TVDDFTT

Explanation:
Alternate letters +1 and −1.
P→Q (+1)
R→Q (−1)
O→P (+1)
B→D (+2)
L→N (+2)
E→F (+1)
M→O (+2)

Apply same pattern.

Trick:
When coding looks random, check alternating increases/decreases.

Q62. If INTERVIEW → VJFWGTZRF, how is SELECTION written?

Answer: TFMDUJPO

Explanation:
Each letter +1, then word reversed.

Q63. If A1B2C3 is written as C3B2A1, how is D4E5F6 written?

Answer: F6E5D4

Explanation:
Complete reversal of letter-number pairs.

Q64. If HUMAN = 52135, how is BRAIN written?

Answer: 21895

Explanation:
Fixed letter-digit mapping.

Q65. If TEACHER = VGCEJGT, how is STUDENT written?

Answer: UVVFOGP

Explanation:
Reverse word + each letter +1.

Q66. If FLOWER = EKNVDQ, how is GARDEN written?

Answer: FZQCEM

Explanation:
Each letter −1.

Q67. If DESIGN = 246810, how is CREATE written?

Answer: 3681014

Explanation:
Alphabet position × 2.

Q68. If CLOCK = 63, WATCH = 72, then TIME = ?

Answer: 52

Explanation:
Sum of alphabet values + number of letters.

Q69. If A → Z, B → Y, then LOGIC is written as?

Answer: OLTRX

Explanation:
Reverse alphabet coding.

Q70. If BRIDGE = ETKJHG, how is TUNNEL written?

Answer: WXRQHO

Explanation:
Each letter +3.

Q71. If COMPUTER = RFUVQNPC, how is SCIENCE written?

Answer: FDJOFJT

Explanation:
Reverse + shift +1.

Q72. If PLATFORM = 86420931, how is KEYBOARD written?

Answer: 52179864

Explanation:
Letter positions rearranged.

Q73. If PEN = 27, PENCIL = 54, then BOOK = ?

Answer: 32

Explanation:
Sum of alphabet values × number of vowels.

Q74. If + means −, − means ×, × means ÷, find:

20 + 10 − 2 × 4

Answer: 10

Q75. If SILENT = LISTEN, how is EARTH written?

Answer: HTRAE

Explanation:
Word reversed.

Q76. If DOCTOR = 6151520, how is NURSE written?

Answer: 1421185

Explanation:
Alphabet positions written continuously.

Q77. If RAIN = 182914, how is WIND written?

Answer: 2314914

Q78. If A = 1, Z = 26, and SUCCESS = ?

Answer: 96

Q79. If MOBILE = ODKJCN, how is LAPTOP written?

Answer: NBRSRQ

Q80. If ENERGY = FOHSHZ, how is POWER written?

Answer: QPXFS

Coding & Decoding – SET 5 (Q81–Q100)

Mixed Revision + Elimination Tricks

Q81. If CAT = 24, DOG = 26, then LION = ?

Answer: 54

Trick:
Use alphabet values. Eliminate options fast.

Q82. If A1Z26, B2Y25, then C3X24, what is D4 = ?

Answer: W23

Q83. If BOOK = CPPL, how is PAGE written?

Answer: QBHF

Q84. If STAR = 20118, how is MOON written?

Answer: 13151514

Q85. If KEY = LOCK, LOCK = DOOR, then KEY = ?

Answer: DOOR

Q86. If PLANE = 50, SHIP = 44, then CAR = ?

Answer: 24

Q87. If ABCDE = EDCBA, how is PQRST written?

Answer: TSRQP

Q88. If WATER = 231518, how is FIRE written?

Answer: 69518

Q89. If HAPPY = 721625, how is SMILE written?

Answer: 19139125

Q90. If BIRD = CJSE, how is FISH written?

Answer: GJTI

Q91. If + means ×, × means +, then

6 + 4 × 2 = ?

Answer: 14

Q92. If SUN = 54, MOON = 57, then STAR = ?

Answer: 76

Q93. If CHAIR = IJCMS, how is TABLE written?

Answer: VCEMF

Q94. If NIGHT = 581420, how is LIGHT written?

Answer: 12981420

Q95. If A → 2, B → 4, C → 6, then Z → ?

Answer: 52

Q96. If PHONE = QJQPF, how is EMAIL written?

Answer: FNBJM

Q97. If PAPER = 50, NOTE = 54, then BOOK = ?

Answer: 41

Q98. If TRAIN = NIART, how is PLANE written?

Answer: ENALP

Q99. If CLOUD = ENQWF, how is RAIN written?

Answer: TCLP

Q100. If LOGIC = IQKKE, how is REASON written?

Answer: TGCUQP