Coding Decoding NMAT Questions 2026: 35+ Practice Questions (With Answers & Tricks) - MBA PrepLab

Coding Decoding NMAT Questions 2026: 35+ Practice Questions (With Answers & Tricks)

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Coding-Decoding Questions for NMAT 2026: 36 Practice Questions with Answers and Shortcuts

Coding-Decoding Questions for NMAT 2026: 36 Practice Questions with Answers and Shortcuts

Coding-decoding questions test how quickly you can identify a rule connecting letters, numbers, words or coded statements. They are useful for developing the pattern-recognition and elimination skills required in the Logical Reasoning section of the NMAT by GMAC exam.

The NMAT Logical Reasoning section currently contains 36 questions to be answered in 40 minutes. The examination is computer-adaptive, has no negative marking and does not allow candidates to return to previously answered questions.

Content note: The 36 questions below are original, exam-style practice questions. They are not represented as official or previously administered NMAT questions.

Reviewed by Kaushik Kapoor Co-founder and Director of Erudite, a premium MBA entrance coaching institute headquartered in Kolkata. An alumnus of XLRI Jamshedpur and St. Xavier’s College, Kolkata, he has more than 25 years of experience in student mentoring, MBA entrance preparation, test-prep strategy and academic training.

What Are Coding-Decoding Questions?

Coding-decoding questions present a word, number or sentence in an altered form. You must identify the rule used in the example and apply the same rule to a new item. Common rules include alphabet shifts, reversals, opposite letters, numerical values, rearrangements and word-substitution codes.

Types of Coding-Decoding Questions

Type How the Code Works Simple Example
Fixed letter shift Every letter moves by the same number of places CAT → DBU means +1
Alternating or progressive shift Different positions use different shifts ABC → BDF means +1, +2, +3
Reversal or rearrangement Letters are reversed, paired or reordered MOTHER → REHTOM
Opposite-alphabet coding A becomes Z, B becomes Y, and so on CAT → XZG
Numerical coding Letters are converted into alphabet values CAT = 3 + 1 + 20 = 24
Sentence coding Common words and codes are compared “red apple” and “green apple” reveal the code for “apple”

Essential Coding-Decoding Shortcuts

1. Memorise the Main Alphabet Anchors

Use the anchor sequence:

  • E = 5

  • J = 10

  • O = 15

  • T = 20

  • Y = 25

This is commonly remembered as EJOTY. You can calculate nearby letter values from these anchors instead of recounting from A every time.

2. Use the Reverse-Position Formula

A letter’s forward position and reverse position always total 27.

Reverse position = 27 − forward position

For example:

  • H is 8th from the beginning.

  • Its reverse position is 27 − 8 = 19.

Common opposite pairs include:

A–Z, B–Y, C–X, D–W, E–V and F–U.

3. Check for Alphabet Wraparound

When a shift moves beyond Z, continue again from A.

For example:

  • Y + 3 = B

  • Z + 2 = B

  • A − 2 = Y

4. Test the Simplest Consistent Rule First

Check rules in this order:

  1. Same shift for every letter.

  2. Alternating shifts.

  3. Progressive shifts.

  4. Reversal.

  5. Opposite letters.

  6. Odd-even rearrangement.

  7. Numerical operations.

  8. Mixed rules.

Do not create an exception simply to make one example fit. A valid rule should explain every position consistently.

5. Use Intersections in Sentence Coding

When two statements share one word, look for the code shared by those two statements. Confirm the match with a third statement before finalising the answer.

36 NMAT Coding-Decoding Practice Questions

Level 1: Basic Letter Coding

  1. If CAT is coded as FDW, how is DOG coded?

    1. FQJ
    2. GRJ
    3. GQJ
    4. HPK

  2. If MIND is coded as OKPF, how is GAME coded?

    1. HBNF
    2. ICOG
    3. JDPH
    4. IBNF

  3. If ROAD is coded as QNZC, how is TIME coded?

    1. SHLD
    2. SIME
    3. RHKC
    4. TINE

  4. If BANK is coded as CCOO, using alternating shifts of +1 and +2, how is MATH coded?

    1. NBUJ
    2. NCUJ
    3. MCTI
    4. ODVK

  5. If COLD is coded as DQOH by shifting successive letters by +1, +2, +3 and +4, how is HEAT coded?

    1. IGDX
    2. JHDY
    3. IFGW
    4. HFCW

  6. If ZEBRA is coded as AFCSB, how is YOUNG coded?

    1. ZPVOH
    2. ZOUNH
    3. APVOI
    4. YOUNH

  7. If PLANE is coded as OKZMD, how is TRAIN coded?

    1. SQZHM
    2. RSZIN
    3. TPBJO
    4. RQYGL

  8. If TABLE is coded as UZCKF using alternating shifts of +1 and −1, how is CHAIR coded?

    1. DGBHS
    2. CGBIR
    3. EHCIT
    4. DHBIS

  9. If MOTHER is coded as REHTOM, how is MARKET coded?

    1. TEKRAM
    2. TEKMAR
    3. RAMKET
    4. TERKAM

  10. If SCHOOL is coded as LOOHCS, how is PLANET coded?

    1. TENALP
    2. TENAIP
    3. PLANET
    4. TENPLA

  11. In an opposite-alphabet code, CAT is written as XZG. How is PIG written?

    1. KRT
    2. PRT
    3. JQS
    4. LST

  12. If FRIEND is written as UIRVMW using opposite letters, how is PLANET written?

    1. KOZMVG
    2. KLZNVG
    3. PLZMVG
    4. KOANVG

Level 2: Numerical and Rearrangement Coding

  1. A word is first reversed and then every letter is shifted forward by one place. If GAME becomes FNBH, how does MIND change?

    1. EOJN
    2. DNIM
    3. FPKO
    4. ENJO

  2. Adjacent letters are swapped in pairs. If ABCDEF becomes BADCFE, how does MARKET change?

    1. AMKRTE
    2. AMRKET
    3. MRAKTE
    4. AKMRTE

  3. If the code of a word is the sum of its alphabet positions, CAT = 24 and DOG = 26. What is the code for BOOK?

    1. 41
    2. 42
    3. 43
    4. 44

  4. The code of a word is the sum of the alphabet positions of its first and last letters. If TRAIN = 34, what is the code for PLANE?

    1. 19
    2. 20
    3. 21
    4. 22

  5. The code is the product of the alphabet positions of the first and last letters. If CAT = 60 and DOG = 28, what is the code for PIG?

    1. 96
    2. 104
    3. 112
    4. 120

  6. The code is the sum of the alphabet positions of the vowels only. If TEAM = 6 and ROAD = 16, what is the code for AUDIO?

    1. 45
    2. 46
    3. 47
    4. 50

  7. The code is the sum of the alphabet positions of the consonants only. If CAT = 23 and PIG = 23, what is the code for DOG?

    1. 9
    2. 10
    3. 11
    4. 12

  8. The code is the sum of the reverse alphabet positions of all letters. If CAT = 57 and DOG = 55, what is the code for PIG?

    1. 47
    2. 48
    3. 49
    4. 50

  9. A six-letter word is divided into two equal halves, and the halves exchange places. If MARKET becomes KETMAR, how does PLANET change?

    1. NETPLA
    2. TENPLA
    3. PLANET
    4. PLATEN

  10. Letters in odd-numbered positions are written first, followed by letters in even-numbered positions. If PLANET becomes PAELNT, how does MARKET change?

    1. MREAKT
    2. MARKTE
    3. AKTMRE
    4. MRAEKT

  11. Letters in even-numbered positions are written first, followed by letters in odd-numbered positions. If GARDEN becomes ADNGRE, how does PLANET change?

    1. LNTPAE
    2. PAELNT
    3. NTLPAE
    4. LNETPA

  12. Letters are written alternately from the beginning and end of a word. If ABCDEF becomes AFBECD, how does PLANET change?

    1. PTLEAN
    2. PETLAN
    3. TPLENA
    4. PLANET

Level 3: Mixed and Sentence Coding

  1. A word is first reversed and then each letter is replaced by its opposite letter. If CAT becomes GZX and DOG becomes TLW, how does PIG change?

    1. TRK
    2. KRT
    3. TIR
    4. RKT

  2. Successive letters are shifted by +1, +2, +3 and +4. If CODE becomes DQGI, how does MATH change?

    1. NCWL
    2. NBVK
    3. ODXM
    4. MCWK

Use the following statements for Questions 27 and 28:

  • “red apple sweet” is coded as ka mi zo

  • “green apple fresh” is coded as tu mi pe

  • “red rose fresh” is coded as ka lo pe

  1. What is the code for apple?

    1. mi
    2. ka
    3. zo
    4. pe

  2. What is the code for rose?

    1. ka
    2. lo
    3. pe
    4. tu

  3. Study the statements:

    • “books are useful” = 7 3 9

    • “pens are blue” = 4 3 6

    • “books look new” = 7 8 2

    Which number represents useful?

    1. 7
    2. 3
    3. 9
    4. 6

Use the following statements for Questions 30 and 31:

  • “learn with practice” = di na fo

  • “practice builds speed” = fo ki ru

  • “learn builds confidence” = di ki sa

  1. What is the code for with?

    1. di
    2. na
    3. fo
    4. ki

  2. What is the code for speed?

    1. fo
    2. ki
    3. ru
    4. sa

  3. Study the statements:

    • “tea is hot” = ab cd ef

    • “coffee is bitter” = gh cd ij

    • “hot and bitter” = ef kl ij

    What is the code for and?

    1. cd
    2. ef
    3. ij
    4. kl

  4. Every vowel is shifted forward by two places, while every consonant is shifted backward by one place. If CODE becomes BQCG, how does MATH change?

    1. LCSG
    2. MCUH
    3. KCTH
    4. LBTG

  5. A word is coded by writing the alphabet position of each letter in the same order. If NMAP becomes 14-13-1-16, how is XLRI coded?

    1. 24-12-18-9
    2. 23-12-18-9
    3. 24-11-18-9
    4. 24-12-19-9

  6. The code is obtained by adding the alphabet positions of all letters and subtracting the number of letters in the word. If CAT = 21 and DOG = 23, what is the code for PIG?

    1. 28
    2. 29
    3. 30
    4. 32

  7. A word is coded using the positive differences between consecutive letter positions. If ACE = 2-2 and BDF = 2-2, how is MQT coded?

    1. 3-4
    2. 4-3
    3. 4-4
    4. 5-3

Answer Key and Shortcuts

Answers 1–12

No. Answer Shortcut
1 B. GRJ Shift every letter forward by 3.
2 B. ICOG Shift every letter forward by 2.
3 A. SHLD Shift every letter backward by 1.
4 B. NCUJ Apply +1, +2, +1, +2.
5 A. IGDX Apply +1, +2, +3, +4.
6 A. ZPVOH Shift every letter forward by 1, using wraparound after Z.
7 A. SQZHM Shift every letter backward by 1.
8 A. DGBHS Apply +1, −1, +1, −1, +1.
9 A. TEKRAM Reverse the complete word.
10 A. TENALP Reverse the complete word.
11 A. KRT Use opposite letters: P–K, I–R and G–T.
12 A. KOZMVG Replace every letter with its opposite-alphabet partner.

Answers 13–24

No. Answer Shortcut
13 A. EOJN MIND → DNIM → EOJN after adding 1 to each reversed letter.
14 A. AMKRTE Swap MA, RK and ET to obtain AM, KR and TE.
15 C. 43 B + O + O + K = 2 + 15 + 15 + 11.
16 C. 21 P + E = 16 + 5.
17 C. 112 P × G = 16 × 7.
18 B. 46 A + U + I + O = 1 + 21 + 9 + 15.
19 C. 11 D + G = 4 + 7.
20 C. 49 Reverse values: P = 11, I = 18 and G = 20.
21 A. NETPLA PLANET → PLA + NET → NETPLA.
22 A. MREAKT Odd positions M, R, E; even positions A, K, T.
23 A. LNTPAE Even positions L, N, T; odd positions P, A, E.
24 A. PTLEAN Take first, last, second, second-last, and continue inward.

Answers 25–36

No. Answer Shortcut
25 A. TRK PIG → GIP; opposite letters of G, I and P are T, R and K.
26 A. NCWL M+1=N, A+2=C, T+3=W and H+4=L.
27 A. mi “Apple” is common to the first and second statements; “mi” is the common code.
28 B. lo After identifying red = ka and fresh = pe, rose must equal lo.
29 C. 9 Books = 7 and are = 3, leaving useful = 9.
30 B. na Learn = di and practice = fo, leaving with = na.
31 C. ru Practice = fo and builds = ki, leaving speed = ru.
32 D. kl Is = cd, hot = ef and bitter = ij, leaving and = kl.
33 A. LCSG M−1=L, A+2=C, T−1=S and H−1=G.
34 A. 24-12-18-9 X=24, L=12, R=18 and I=9.
35 B. 29 P+I+G = 32; subtract the three letters: 32−3=29.
36 B. 4-3 M to Q is +4; Q to T is +3.

Common Coding-Decoding Mistakes

Confusing Reversal with Opposite-Letter Coding

  • Reversal changes the order of letters.

  • Opposite-letter coding changes each letter but usually retains its position.

For example:

  • CAT reversed is TAC.

  • CAT in opposite letters is XZG.

Missing Wraparound

A forward shift after Z begins again at A. A backward shift before A continues from Z.

Forcing a Complicated Rule

Start with the simplest rule that works consistently. Do not introduce a special operation for one letter unless the question provides enough examples to establish that pattern.

Using Only One Sentence Comparison

In substitution coding, one shared word and one shared code often suggest a match. Confirm it using another statement whenever possible.

Ignoring Position Numbers

Always mark the positions beneath a word when the rule may involve odd-even places, alternating shifts or progressive movement.

How to Improve Coding-Decoding Speed

  1. Complete the first practice attempt without a timer.

  2. Record whether each error came from alphabet recall, rule recognition or calculation.

  3. Repeat only the incorrect questions after one day.

  4. Attempt a mixed set under timed conditions.

  5. Use a compact rough-work format rather than writing full sentences.

  6. Answer every NMAT question because the exam has no negative marking.

  7. When two patterns appear possible, choose the simplest rule that explains every given example.

Because candidates cannot return to a previous NMAT question, practising decisive rule selection is more useful than spending excessive time searching for an unnecessarily complex pattern.

Seven-Day Coding-Decoding Practice Plan

Day Focus
1 Learn A1Z26 positions and EJOTY anchors
2 Practise fixed forward and backward shifts
3 Practise alternating and progressive shifts
4 Practise reversal, opposite letters and rearrangements
5 Practise numerical coding
6 Practise sentence and substitution coding
7 Attempt a mixed timed set and analyse every error

After completing topic-wise practice, use official NMAT practice examinations to become familiar with the full test structure and interface. Official practice tests contain 108 questions and follow a structure similar to the actual examination.

Frequently Asked Questions

Are coding-decoding questions guaranteed in NMAT 2026?

No. The official public NMAT syllabus does not list coding-decoding as a separate guaranteed topic. It lists broader Logical Reasoning areas such as critical reasoning, deductions and analytical puzzles. Coding-decoding remains useful for building pattern-recognition skills.

How can I memorise alphabet positions quickly?

Memorise E=5, J=10, O=15, T=20 and Y=25. Use these EJOTY anchors to calculate nearby positions. Also remember that a letter’s forward and reverse positions total 27.

How many coding-decoding questions should I practise?

There is no official number. Practise until you can recognise the main pattern types consistently and explain why each wrong option is incorrect. Error quality matters more than completing an arbitrary question count.

Should I use rough work for coding-decoding questions?

Yes. Write only the essential shifts, letter values or common-word intersections. Compact rough work reduces mental calculation errors without consuming unnecessary time.

What should I do when two coding rules seem possible?

Test both rules against every letter or statement provided. Prefer the simplest rule that explains all available information without exceptions.

Are the questions on this page official NMAT questions?

No. They are original, exam-style questions created for concept practice. For past-question practice and authentic test simulation, use the official NMAT guide and official practice examinations.

Final Preparation Advice

Coding-decoding practice is most effective when it improves three specific skills: alphabet recall, consistent rule recognition and accurate elimination. Learn the core patterns, maintain an error log and repeat mixed sets until you can identify both the correct rule and the reason each alternative fails.

Treat this topic as one component of a balanced NMAT Logical Reasoning plan rather than assuming a fixed number of coding-decoding questions will appear.