1000 Coding Decoding Reasoning Questions PDF
The 100 coding decoding questions are randomly distributed across the six types of coding-decoding (Letter Coding, Number Coding, Mixed Coding, Word Coding, Substitution Coding, Conditional Coding) to ensure variety.
Each question includes four options, the correct answer, and a concise explanation.
30 Coding Decoding Questions are given at the end for your practice purpose.
If you need more questions, specific types, or a different format, let me know in the comments section.
1. Letter Coding
Q1: If 'FAN' is coded as 'ICP', how is 'RAT' coded?
A) UGX
B) VHY
C) UHY
D) VGX
Answer: C) UHY
Explanation: FAN → ICP: F(6)→I(9): +3, A(1)→C(3): +2, N(14)→P(16): +2. Pattern: +3, +2, +2. RAT: R(18)→U(21): +3, A(1)→C(3): +2, T(20)→V(22): +2. Code: UHY.
Q2: If 'MOON' is coded as 'QRSU', how is 'STAR' coded?
A) WXAF
B) VYZG
C) UXYZ
D) VYAF
Answer: D) VYAF
Explanation: MOON → QRSU: M(13)→Q(17): +4, O(15)→R(18): +3, O(15)→S(19): +4, N(14)→U(21): +7. Pattern: +4, +3, +4, +7. STAR: S(19)→W(23): +4, T(20)→W(23): +3, A(1)→E(5): +4, R(18)→I(9): +7 (mod 26). Code: VYAF.
Q3: If 'DOG' is coded as 'AFK', how is 'CAT' coded?
A) ZFI
B) YEI
C) AFJ
D) ZEI
Answer: B) YEI
Explanation: DOG → AFK: D(4)→A(1): -3, O(15)→F(6): -9, G(7)→K(11): +4. Pattern: -3, -9, +4. CAT: C(3)→Z(26): -3, A(1)→S(19): -9 (mod 26), T(20)→I(9): +4 (mod 26). Code: YEI.
Q4: If 'WIND' is coded as 'YLFJ', how is 'BARK' coded?
A) DHLF
B) EGMI
C) FJOK
D) DIKG
Answer: A) DHLF
Explanation: WIND → YLFJ: W(23)→Y(25): +2, I(9)→L(12): +3, N(14)→F(6): -8, D(4)→J(10): +6. Pattern: +2, +3, -8, +6. BARK: B(2)→D(4): +2, A(1)→D(4): +3, R(18)→J(10): -8, K(11)→I(9): +6 (mod 26). Code: DHLF.
Q5: If 'SING' is coded as 'UKTK', how is 'KING' coded?
A) MJHL
B) NKIM
C) OLJN
D) PKKO
Answer: B) NKIM
Explanation: SING → UKTK: S(19)→U(21): +2, I(9)→K(11): +2, N(14)→T(20): +6, G(7)→K(11): +4. Pattern: +2, +2, +6, +4. KING: K(11)→M(13): +2, I(9)→K(11): +2, N(14)→T(20): +6, G(7)→J(10): +4. Code: NKIM.
Q6: If 'BALL' is coded as 'EDOO', how is 'FANS' coded?
A) JHWG
B) IIVF
C) JJWF
D) KKYI
Answer: B) IIVF
Explanation: BALL → EDOO: B(2)→E(5): +3, A(1)→D(4): +3, L(12)→O(15): +3, L(12)→O(15): +3. Pattern: +3 to each. FANS: F(6)→I(9): +3, A(1)→D(4): +3, N(14)→Q(17): +3, S(19)→V(22): +3. Code: IIVF.
Q7: If 'TIGER' is coded as 'WLKMW', how is 'LION' coded?
A) OLVU
B) PMWV
C) QNXW
D) RNXY
Answer: A) OLVU
Explanation: TIGER → WLKMW: T(20)→W(23): +3, I(9)→L(12): +3, G(7)→K(11): +4, E(5)→M(13): +8, R(18)→W(23): +5. Pattern: +3, +3, +4, +8, +5. LION: L(12)→O(15): +3, I(9)→L(12): +3, O(15)→S(19): +4, N(14)→V(22): +8. Code: OLVU.
Q8: If 'CANE' is coded as 'GKSQ', how is 'WOLF' coded?
A) AMBV
B) BNXC
C) COZE
D) DPAG
Answer: A) AMBV
Explanation: CANE → GKSQ: C(3)→G(7): +4, A(1)→K(11): +10, N(14)→S(19): +5, E(5)→Q(17): +12. Pattern: +4, +10, +5, +12. WOLF: W(23)→A(1): +4 (mod 26), O(15)→Y(25): +10, L(12)→Q(17): +5, F(6)→I(9): +12 (mod 26). Code: AMBV.
Q9: If 'RAT' is coded as 'UHY', how is 'FOX' coded?
A) KTC
B) JSA
C) IUA
D) KUA
Answer: D) KUA
Explanation: RAT → UHY: R(18)→U(21): +3, A(1)→H(8): +7, T(20)→Y(25): +5. Pattern: +3, +7, +5. FOX: F(6)→I(9): +3, O(15)→I(9): +7 (mod 26), X(24)→I(9): +5 (mod 26). Code: KUA.
Q10: If 'LAMP' is coded as 'NCSU', how is 'GLOW' coded?
A) IQAC
B) JQBD
C) IRBC
D) JQAC
Answer: B) JQBD
Explanation: LAMP → NCSU: L(12)→N(14): +2, A(1)→C(3): +2, M(13)→S(19): +6, P(16)→U(21): +5. Pattern: +2, +2, +6, +5. GLOW: G(7)→I(9): +2, L(12)→N(14): +2, O(15)→U(21): +6, W(23)→I(2): +5 (mod 26). Code: JQBD.
2. Number Coding
Q11: If each letter is coded by its alphabetical position (A=1, B=2, ..., Z=26), what is the code for 'FIRE'?
A) 6-9-18-5
B) 5-9-18-5
C) 6-10-17-5
D) 5-10-17-5
Answer: B) 5-9-18-5
Explanation: F=6, I=9, R=18, E=5. Code: 5-9-18-5.
Q12: If each letter is coded by its reverse alphabetical position (Z=1, Y=2, ..., A=26), what is the code for 'WOLF'?
A) 4-12-13-21
B) 5-12-13-21
C) 4-13-12-21
D) 5-13-12-21
Answer: A) 4-12-13-21
Explanation: Reverse: Z=1, ..., A=26. W=4, O=12, L=13, F=21. Code: 4-12-13-21.
Q13: If each letter is coded as its alphabetical position plus 2, what is the code for 'BARK'?
A) 4-1-20-13
B) 5-2-21-14
C) 3-1-20-12
D) 4-2-21-13
Answer: B) 5-2-21-14
Explanation: B=2→4 (+2), A=1→3 (+2), R=18→20 (+2), K=11→13 (+2). Code: 5-2-21-14.
Q14: If each letter is coded as its alphabetical position minus its position in the word, what is the code for 'SING'?
A) 18-8-12-6
B) 19-7-11-5
C) 18-7-12-5
D) 19-8-11-6
Answer: C) 18-7-12-5
Explanation: S=19 (1st, -1)→18, I=9 (2nd, -2)→7, N=14 (3rd, -3)→11, G=7 (4th, -4)→3. Code: 18-7-12-5.
Q15: If each letter is coded as its alphabetical position doubled, what is the code for 'CAT'?
A) 6-2-40
B) 4-2-40
C) 6-1-40
D) 4-1-40
Answer: A) 6-2-40
Explanation: C=3→6 (×2), A=1→2 (×2), T=20→40 (×2). Code: 6-2-40.
Q16: If each letter is coded as its alphabetical position plus 3, what is the code for 'MOON'?
A) 16-18-18-17
B) 15-17-17-16
C) 16-17-18-16
D) 15-18-17-17
Answer: A) 16-18-18-17
Explanation: M=13→16 (+3), O=15→18 (+3), O=15→18 (+3), N=14→17 (+3). Code: 16-18-18-17.
Q17: If each letter is coded as its reverse alphabetical position minus 1, what is the code for 'FAN'?
A) 20-25-6
B) 21-25-6
C) 20-24-6
D) 21-24-6
Answer: A) 20-25-6
Explanation: Reverse: F=21→20 (-1), A=26→25 (-1), N=7→6 (-1). Code: 20-25-6.
Q18: If each letter is coded as its alphabetical position plus its position in the word, what is the code for 'DOG'?
A) 5-16-8
B) 4-16-8
C) 5-15-8
D) 4-15-8
Answer: A) 5-16-8
Explanation: D=4 (1st, +1)→5, O=15 (2nd, +2)→17, G=7 (3rd, +3)→10. Code: 5-16-8.
Q19: If each letter is coded as its alphabetical position minus 2, what is the code for 'WIND'?
A) 21-7-12-2
B) 22-8-13-3
C) 20-6-11-1
D) 21-8-12-2
Answer: C) 20-6-11-1
Explanation: W=23→21 (-2), I=9→7 (-2), N=14→12 (-2), D=4→2 (-2). Code: 20-6-11-1.
Q20: If each letter is coded as its alphabetical position multiplied by 3, what is the code for 'KEY'?
A) 33-15-75
B) 30-12-72
C) 33-12-75
D) 30-15-72
Answer: A) 33-15-75
Explanation: K=11→33 (×3), E=5→15 (×3), Y=25→75 (×3). Code: 33-15-75.
3. Mixed Coding
Q21: If 'BARK' is coded as '3$FJ', how is 'FANS' coded?
A) 4$UA
B) 3$UA
C) 4$TB
D) 3$TB
Answer: A) 4$UA
Explanation: BARK → 3$FJ: B(2)→3 (vowel count+2=1+2), A→$, R(18)→F(6): -12, K(11)→J(10): -1. Pattern: Vowel count+2, vowel→$, -12, -1. FANS: 1 vowel+2=3, A→$, N(14)→B(2): -12, S(19)→I(9): -1 (mod 26). Code: 4$UA.
Q22: If 'MOON' is coded as '4RRS', how is 'STAR' coded?
A) 5WYZ
B) 4VXY
C) 5UXZ
D) 4WXY
Answer: D) 4WXY
Explanation: MOON → 4RRS: M(13)→4 (vowel count: 2+2), O(15)→R(18): +3, O(15)→R(18): +3, N(14)→S(19): +5. Pattern: Vowel count+2, +3, +3, +5. STAR: 1 vowel+2=3, T(20)→W(23): +3, A(1)→E(5): +4, R(18)→Z(25): +7. Code: 4WXY.
Q23: If 'RAT' is coded as 'U2Y', how is 'DOG' coded?
A) I3I
B) J2J
C) I2I
D) J3J
Answer: A) I3I
Explanation: RAT → U2Y: R(18)→U(21): +3, A (1 vowel→2), T(20)→Y(25): +5. Pattern: +3, vowel count, +5. DOG: D(4)→G(7): +3, O (1 vowel→3), G(7)→I(9): +2. Code: I3I.
Q24: If 'LION' is coded as '3PUW', how is 'WOLF' coded?
A) 4IZI
B) 3JAJ
C) 4JAJ
D) 3IAI
Answer: C) 4JAJ
Explanation: LION → 3PUW: L(12)→3 (vowel count+1=2+1), I(9)→P(16): +7, O(15)→U(21): +6, N(14)→W(23): +9. Pattern: Vowel count+1, +7, +6, +9. WOLF: 2 vowels+1=3, W(23)→D(4): +7 (mod 26), O(15)→U(21): +6, F(6)→I(9): +3. Code: 4JAJ.
Q25: If 'FAN' is coded as '2$J', how is 'SING' coded?
A) 3$U
B) 2$V
C) 3$V
D) 2$U
Answer: C) 3$V
Explanation: FAN → 2$J: F(6)→2 (vowel count+1=1+1), A→$, N(14)→J(10): -4. Pattern: Vowel count+1, vowel→$, -4. SING: 2 vowels+1=3, I→$, N(14)→J(10): -4. Code: 3$V.
Q26: If 'CANE' is coded as '4@PK', how is 'BARK' coded?
A) 3@FJ
B) 4@FJ
C) 3@EI
D) 4@EI
Answer: A) 3@FJ
Explanation: CANE → 4@PK: C(3)→4 (vowel count+2=2+2), A→@, N(14)→P(16): +2, E(5)→K(11): +6. Pattern: Vowel count+2, vowel→@, +2, +6. BARK: 1 vowel+2=3, A→@, R(18)→U(21): +3, K(11)→I(9): +6 (mod 26). Code: 3@FJ.
Q27: If 'TIGER' is coded as '3YPLC', how is 'LION' coded?
A) 3UXVW
B) 2SVTU
C) 3SVTU
D) 2UXVW
Answer: C) 3SVTU
Explanation: TIGER → 3YPLC: T(20)→3 (vowel count: 3), I(9)→Y(25): +16, G(7)→P(16): +9, E(5)→L(12): +7, R(18)→C(3): +11. Pattern: Vowel count, +16, +9, +7, +11. LION: 2 vowels→2, L(12)→B(2): +16 (mod 26), I(9)→I(9): +9 (mod 26), O(15)→V(22): +7, N(14)→I(9): +11 (mod 26). Code: 3SVTU.
Q28: If 'STAR' is coded as '#VXY', how is 'MOON' coded?
A) #QRS
B) #PQR
C) #RST
D) #OPQ
Answer: A) #QRS
Explanation: STAR → #VXY: S(19)→#, T(20)→V(22): +2, A(1)→X(24): +23, R(18)→Y(25): +7. Pattern: First→#, +2, +23, +7. MOON: M(13)→#, O(15)→Q(17): +2, O(15)→I(9): +23 (mod 26), N(14)→U(21): +7. Code: #QRS.
Q29: If 'HAT' is coded as 'J3W', how is 'KEY' coded?
A) M2A
B) N3B
C) M3A
D) N2B
Answer: C) M3A
Explanation: HAT → J3W: H(8)→J(10): +2, A (1 vowel→3), T(20)→W(23): +3. Pattern: +2, vowel count, +3. KEY: K(11)→M(13): +2, E (1 vowel→3), Y(25)→B(2): +3 (mod 26). Code: M3A.
Q30: If 'WOLF' is coded as '4$IZ', how is 'FANS' coded?
A) 3$UA
B) 4$UA
C) 3$TB
D) 4$TB
Answer: B) 4$UA
Explanation: WOLF → 4$IZ: W(23)→4 (vowel count+2=2+2), O→$, L(12)→I(9): -3, F(6)→Z(26): +20. Pattern: Vowel count+2, vowel→$, -3, +20. FANS: 1 vowel+2=3, A→$, N(14)→K(11): -3, S(19)→I(9): +20 (mod 26). Code: 4$UA.
4. Word Coding
Q31: If 'run' is coded as 'sprint', 'walk' as 'stroll', and 'jump' as 'leap', what is the code for 'run jump walk'?
A) sprint leap stroll
B) leap sprint stroll
C) stroll sprint leap
D) sprint stroll leap
Answer: A) sprint leap stroll
Explanation: run→sprint, jump→leap, walk→stroll. For 'run jump walk': run→sprint, jump→leap, walk→stroll. Code: sprint leap stroll.
Q32: If 'pen' is coded as 'pencil', 'book' as 'notebook', and 'ink' as 'marker', what is the code for 'book ink pen'?
A) notebook marker pencil
B) pencil notebook marker
C) marker pencil notebook
D) notebook pencil marker
Answer: A) notebook marker pencil
Explanation: book→notebook, ink→marker, pen→pencil. For 'book ink pen': book→notebook, ink→marker, pen→pencil. Code: notebook marker pencil.
Q33: If 'cat' is coded as 'dog', 'dog' as 'rat', and 'rat' as 'mouse', what is the code for 'dog cat'?
A) rat dog
B) mouse rat
C) dog mouse
D) rat mouse
Answer: A) rat dog
Explanation: dog→rat, cat→dog. For 'dog cat': dog→rat, cat→dog. Code: rat dog.
Q34: If 'sun' is coded as 'moon', 'moon' as 'star', and 'star' as 'cloud', what is the code for 'star sun moon'?
A) cloud moon star
B) star cloud moon
C) moon star cloud
D) cloud star moon
Answer: A) cloud moon star
Explanation: star→cloud, sun→moon, moon→star. For 'star sun moon': star→cloud, sun→moon, moon→star. Code: cloud moon star.
Q35: If 'tree' is coded as 'branch', 'flower' as 'petal', and 'root' as 'stem', what is the code for 'flower tree root'?
A) petal branch stem
B) stem petal branch
C) branch stem petal
D) petal stem branch
Answer: A) petal branch stem
Explanation: flower→petal, tree→branch, root→stem. For 'flower tree root': flower→petal, tree→branch, root→stem. Code: petal branch stem.
Q36: If 'sky' is coded as 'blue', 'cloud' as 'white', and 'rain' as 'storm', what is the code for 'rain sky cloud'?
A) storm blue white
B) blue storm white
C) white blue storm
D) storm white blue
Answer: A) storm blue white
Explanation: rain→storm, sky→blue, cloud→white. For 'rain sky cloud': rain→storm, sky→blue, cloud→white. Code: storm blue white.
Q37: If 'apple' is coded as 'orange', 'banana' as 'grape', and 'cherry' as 'mango', what is the code for 'cherry banana apple'?
A) mango grape orange
B) orange mango grape
C) grape orange mango
D) mango orange grape
Answer: A) mango grape orange
Explanation: cherry→mango, banana→grape, apple→orange. For 'cherry banana apple': cherry→mango, banana→grape, apple→orange. Code: mango grape orange.
Q38: If 'pen' is coded as 'brush', 'paper' as 'canvas', and 'ink' as 'paint', what is the code for 'paper pen ink'?
A) canvas brush paint
B) paint canvas brush
C) brush paint canvas
D) canvas paint brush
Answer: A) canvas brush paint
Explanation: paper→canvas, pen→brush, ink→paint. For 'paper pen ink': paper→canvas, pen→brush, ink→paint. Code: canvas brush paint.
Q39: If 'bird' is coded as 'fish', 'fish' as 'snake', and 'snake' as 'frog', what is the code for 'fish bird'?
A) snake fish
B) frog snake
C) fish frog
D) snake frog
Answer: A) snake fish
Explanation: fish→snake, bird→fish. For 'fish bird': fish→snake, bird→fish. Code: snake fish.
Q40: If 'rose' is coded as 'lily', 'lily' as 'tulip', and 'tulip' as 'daisy', what is the code for 'lily rose tulip'?
A) tulip lily daisy
B) daisy tulip lily
C) lily daisy tulip
D) tulip daisy lily
Answer: A) tulip lily daisy
Explanation: lily→tulip, rose→lily, tulip→daisy. For 'lily rose tulip': lily→tulip, rose→lily, tulip→daisy. Code: tulip lily daisy.
5. Substitution Coding
Q41: If all vowels are replaced with '@', how is 'MOON' coded?
A) M@@N
B) M@N@
C) @@@N
D) M@ON
Answer: A) M@@N
Explanation: Vowels (A, E, I, O, U). In 'MOON', O and O are vowels. Replace with '@'. Code: M@@N
Q42: If all consonants are replaced with '#', how is 'SOUND' coded?
A) #O#N#
B) S#U#D
C) #OU#D
D) S#UND
Answer: A) #O#N#
Explanation: Consonants: S, N, D. Replace with '#'. Code: #O#N#.
Q43: If the first and last letters are swapped, how is 'WOLF' coded?
A) FOWL
B) LOWF
C) OFLW
D) WFOL
Answer: A) FOWL
Explanation: Swap first (W) and last (F). WOLF→FOWL. Code: FOWL.
Q44: If each letter is replaced with the next letter in the alphabet, how is 'FANS' coded?
A) GBOT
B) HCQU
C) IBRV
D) JCSW
Answer: A) GBOT
Explanation: F(6)→G(7), A(1)→B(2), N(14)→O(15), S(19)→T(20). Code: GBOT.
Q45: If all letters are replaced with their reverse alphabetical counterparts (AZ, BY, ..., ZA), how is 'RAT' coded?
A) IZG
B) JYF
C) KXE
D) LWD
Answer: A) IZG
Explanation: R(18)I(9), A(1)Z(26), T(20)G(7). Code: IZG.
Q46: If all vowels are replaced with '', how is 'TRAIN' coded?
A) TRIN
B) TN
C) RI*
D) TRN
Answer: A) TRIN
Explanation: Vowels: A, I. Replace I with ''. Code: TR*IN.
Q47: If all consonants are replaced with '$', how is 'RIVER' coded?
A) $I$E$
B) R$V$R
C) $IV$R
D) RIVE$
Answer: A) $I$E$
Explanation: Consonants: R, V, R. Replace with '$'. Code: $I$E$.
Q48: If the second and fourth letters are swapped, how is 'PLANE' coded?
A) PNLAE
B) PALNE
C) PELNA
D) PLENA
Answer: A) PNLAE
Explanation: Swap second (L) and fourth (N). PLANE→PNLAE. Code: PNLAE.
Q49: If each letter is replaced with the previous letter in the alphabet, how is 'SING' coded?
A) RJMF
B) TKOH
C) QHLF
D) UJPI
Answer: A) RJMF
Explanation: S(19)→R(18), I(9)→H(8), N(14)→M(13), G(7)→F(6). Code: RJMF.
Q50: If all letters are replaced with their reverse alphabetical counterparts, how is 'MOON' coded?
A) NLFM
B) OMEN
C) PNGO
D) QNHP
Answer: A) NLFM
Explanation: M(13)N(14), O(15)L(12), O(15)L(12), N(14)M(13). Code: NLFM.
6. Conditional Coding
Q51: If the first letter is a vowel, add 2 to each letter; otherwise, subtract 2. How is 'APPLE' coded?
A) CRRNG
B) YNNJD
C) BPPKF
D) ZOOKD
Answer: A) CRRNG
Explanation: First letter A (vowel), so +2. A(1)→C(3), P(16)→R(18), P(16)→R(18), L(12)→N(14), E(5)→G(7). Code: CRRNG.
Q52: If the word has an even number of letters, reverse the word; otherwise, add 1 to each letter. How is 'RAT' coded?
A) UFI
B) TAR
C) SBI
D) VHJ
Answer: C) SBI
Explanation: RAT: 3 letters (odd), so +1. R(18)→S(19), A(1)→B(2), T(20)→U(21). Code: SBI.
Q53: If the last letter is a consonant, add 3 to each letter; otherwise, subtract 3. How is 'WAVE' coded?
A) TSVB
B) ZYHL
C) QSUB
D) AFOT
Answer: A) TSVB
Explanation: Last letter E (vowel), so -3. W(23)→T(20), A(1)→W(25), V(22)→S(19), E(5)→B(2). Code: TSVB.
Q54: If the word has more than 3 letters, add 4 to each letter; otherwise, subtract 4. How is 'FAN' coded?
A) BJT
B) IPW
C) ALU
D) ZFI
Answer: A) BJT
Explanation: FAN: 3 letters, so -4. F(6)→B(2), A(1)→W(23), N(14)→J(10). Code: BJT.
Q55: If the first letter is a consonant, swap the first and last letters; otherwise, add 1 to each letter. How is 'SING' coded?
A) GNIS
B) TJOH
C) AFOT
D) UFIJ
Answer: A) GNIS
Explanation: First letter S (consonant), so swap first (S) and last (G). SING→GNIS. Code: GNIS.
Q56: If the word has 4 or more letters, add 2 to each letter; otherwise, reverse the word. How is 'MOON' coded?
A) OQQP
B) NOOM
C) PQQR
D) LNNM
Answer: A) OQQP
Explanation: MOON: 4 letters, so +2. M(13)→O(15), O(15)→Q(17), O(15)→Q(17), N(14)→P(16). Code: OQQP.
Q57: If the last letter is a vowel, add 1 to each letter; otherwise, subtract 1. How is 'BARK' coded?
A) AFOT
B) SZAF
C) CBPJ
D) YZAF
Answer: A) AFOT
Explanation: Last letter K (consonant), so -1. B(2)→A(1), A(1)→Z(26), R(18)→Q(17), K(11)→J(10). Code: AFOT.
Q58: If the first letter is a vowel, reverse the word; otherwise, add 3 to each letter. How is 'TIGER' coded?
A) WLIHW
B) REGIT
C) XMJIX
D) SFHIT
Answer: A) WLIHW
Explanation: First letter T (consonant), so +3. T(20)→W(23), I(9)→L(12), G(7)→J(10), E(5)→I(8), R(18)→U(21). Code: WLIHW.
Q59: If the word has an odd number of letters, add 2 to each letter; otherwise, subtract 2. How is 'FANS' coded?
A) DZFL
B) IBPV
C) CHOT
D) JCRW
Answer: A) DZFL
Explanation: FANS: 4 letters (even), so -2. F(6)→D(4), A(1)→Y(25), N(14)→L(12), S(19)→Q(17). Code: DZFL.
Q60: If the last letter is a consonant, reverse the word; otherwise, add 2 to each letter. How is 'LION' coded?
A) NOIL
B) NKSV
C) PJAF
D) OKTU
Answer: A) NOIL
Explanation: Last letter N (consonant), so reverse. LION→NOIL. Code: NOIL.
Additional Questions (Mixed Types)
Q61: (Letter Coding) If 'KEY' is coded as 'MJA', how is 'DOG' coded?
A) IAF
B) JBG
C) KCH
D) LDI
Answer: A) IAF
Explanation: KEY → MJA: K(11)→M(13): +2, E(5)→J(10): +5, Y(25)→A(1): +2. Pattern: +2, +5, +2. DOG: D(4)→F(6): +2, O(15)→U(21): +6, G(7)→I(9): +2. Code: IAF.
Q62: (Number Coding) If each letter is coded as its alphabetical position plus 4, what is the code for 'SPARK'?
A) 23-20-5-22-15
B) 22-19-4-21-14
C) 24-21-6-23-16
D) 23-19-5-22-14
Answer: A) 23-20-5-22-15
Explanation: S=19→23 (+4), P=16→20 (+4), A=1→5 (+4), R=18→22 (+4), K=11→15 (+4). Code: 23-20-5-22-15.
Q63: (Mixed Coding) If 'SING' is coded as '3$PK', how is 'BARK' coded?
A) 3$FJ
B) 4$FJ
C) 3$EI
D) 4$EI
Answer: A) 3$FJ
Explanation: SING → 3$PK: S(19)→3 (vowel count+1=2+1), I→$, N(14)→P(16): +2, G(7)→K(11): +4. Pattern: Vowel count+1, vowel→$, +2, +4. BARK: 1 vowel+1=2, A→$, R(18)→U(21): +3, K(11)→I(9): +4 (mod 26). Code: 3$FJ.
Q64: (Word Coding) If 'bread' is coded as 'cake', 'butter' as 'cream', and 'jam' as 'jelly', what is the code for 'jam bread butter'?
A) jelly cake cream
B) cream jelly cake
C) cake cream jelly
D) jelly cream cake
Answer: A) jelly cake cream
Explanation: jam→jelly, bread→cake, butter→cream. For 'jam bread butter': jam→jelly, bread→cake, butter→cream. Code: jelly cake cream.
Q65: (Substitution Coding) If all vowels are replaced with '#', how is 'WAVE' coded?
A) W#V#
B) #AV#
C) W#VE
D) WAV#
Answer: A) W#V#
Explanation: Vowels: A, E. Replace with '#'. Code: W#V#.
Q66: (Conditional Coding) If the first letter is a consonant, add 4 to each letter; otherwise, subtract 4. How is 'KING' coded?
A) OJAF
B) AFOT
C) IZFI
D) PJAF
Answer: A) OJAF
Explanation: First letter K (consonant), so +4. K(11)→O(15), I(9)→M(13), N(14)→R(18), G(7)→K(11). Code: OJAF.
Q67: (Letter Coding) If 'PLANE' is coded as 'URTKI', how is 'TRAIN' coded?
A) XWJSF
B) YWKSG
C) ZXLTH
D) AYMTI
Answer: B) YWKSG
Explanation: PLANE → URTKI: P(16)→U(21): +5, L(12)→R(18): +6, A(1)→T(20): +19, N(14)→K(11): -3, E(5)→I(9): +4. Pattern: +5, +6, +19, -3, +4. TRAIN: T(20)→Y(25): +5, R(18)→I(9): +6 (mod 26), A(1)→T(20): +19, I(9)→F(6): -3, N(14)→I(9): +4 (mod 26). Code: YWKSG.
Q68: (Number Coding) If each letter is coded as its alphabetical position minus 3, what is the code for 'FIRE'?
A) 3-6-15-2
B) 2-5-14-1
C) 3-5-15-2
D) 2-6-14-1
Answer: A) 3-6-15-2
Explanation: F=6→3 (-3), I=9→6 (-3), R=18→15 (-3), E=5→2 (-3). Code: 3-6-15-2.
Q69: (Mixed Coding) If 'FANS' is coded as '2#UA', how is 'WOLF' coded?
A) 3#IZ
B) 4#IZ
C) 3#JY
D) 4#JY
Answer: B) 4#IZ
Explanation: FANS → 2#UA: F(6)→2 (vowel count+1=1+1), A→#, N(14)→U(21): +7, S(19)→A(1): +6. Pattern: Vowel count+1, vowel→#, +7, +6. WOLF: 2 vowels+1=3, O→#, L(12)→S(19): +7, F(6)→I(9): +3. Code: 4#IZ.
Q70: (Word Coding) If 'tea' is coded as 'coffee', 'milk' as 'juice', and 'sugar' as 'honey', what is the code for 'milk tea sugar'?
A) juice coffee honey
B) honey juice coffee
C) coffee honey juice
D) juice honey coffee
Answer: A) juice coffee honey
Explanation: milk→juice, tea→coffee, sugar→honey. For 'milk tea sugar': milk→juice, tea→coffee, sugar→honey. Code: juice coffee honey.
Q71: (Substitution Coding) If all consonants are replaced with '@', how is 'MOON' coded?
A) @OO@
B) M@@N
C) @OON
D) MOO@
Answer: A) @OO@
Explanation: Consonants: M, N. Replace with '@'. Code: @OO@.
Q72: (Conditional Coding) If the word has an odd number of letters, reverse the word; otherwise, add 2 to each letter. How is 'MOON' coded?
A) OQQP
B) NOOM
C) PQQR
D) LNNM
Answer: A) OQQP
Explanation: MOON: 4 letters (even), so +2. M(13)→O(15), O(15)→Q(17), O(15)→Q(17), N(14)→P(16). Code: OQQP.
Q73: (Letter Coding) If 'BARK' is coded as 'EDUN', how is 'SING' coded?
A) VQKR
B) WRLS
C) XSMU
D) YTOV
Answer: A) VQKR
Explanation: BARK → EDUN: B(2)→E(5): +3, A(1)→D(4): +3, R(18)→U(21): +3, K(11)→N(14): +3. Pattern: +3 to each. SING: S(19)→V(22): +3, I(9)→L(12): +3, N(14)→Q(17): +3, G(7)→I(9): +3. Code: VQKR.
Q74: (Number Coding) If each letter is coded as its alphabetical position plus 5, what is the code for 'WOLF'?
A) 28-20-17-11
B) 27-19-16-10
C) 28-19-17-10
D) 27-20-16-11
Answer: A) 28-20-17-11
Explanation: W=23→28 (+5), O=15→20 (+5), L=12→17 (+5), F=6→11 (+5). Code: 28-20-17-11.
Q75: (Mixed Coding) If 'KEY' is coded as '2#A', how is 'FAN' coded?
A) 2#J
B) 3#J
C) 2#I
D) 3#I
Answer: A) 2#J
Explanation: KEY → 2#A: K(11)→2 (vowel count+1=1+1), E→#, Y(25)→A(1): +2. Pattern: Vowel count+1, vowel→#, +2. FAN: 1 vowel+1=2, A→#, N(14)→P(16): +2. Code: 2#J.
Q76: (Word Coding) If 'car' is coded as 'bike', 'bike' as 'bus', and 'bus' as 'train', what is the code for 'bike car bus'?
A) bus bike train
B) train bus bike
C) bike train bus
D) bus train bike
Answer: A) bus bike train
Explanation: bike→bus, car→bike, bus→train. For 'bike car bus': bike→bus, car→bike, bus→train. Code: bus bike train.
Q77: (Substitution Coding) If all vowels are replaced with '$', how is 'SOUND' coded?
A) S$U$D
B) $O$ND
C) S$UND
D) $OU$D
Answer: A) S$U$D
Explanation: Vowels: O, U. Replace with '$'. Code: S$U$D.
Q78: (Conditional Coding) If the last letter is a vowel, reverse the word; otherwise, add 1 to each letter. How is 'WAVE' coded?
A) EVAW
B) XBWF
C) YCXG
D) ZDZI
Answer: A) EVAW
Explanation: Last letter E (vowel), so reverse. WAVE→EVAW. Code: EVAW.
Q79: (Letter Coding) If 'FANS' is coded as 'JHWG', how is 'BARK' coded?
A) FJHL
B) GIKM
C) HJLN
D) IKMN
Answer: A) FJHL
Explanation: FANS → JHWG: F(6)→J(10): +4, A(1)→H(8): +7, N(14)→W(23): +9, S(19)→G(7): +14. Pattern: +4, +7, +9, +14. BARK: B(2)→F(6): +4, A(1)→I(9): +8, R(18)→I(9): +9 (mod 26), K(11)→I(9): +14 (mod 26). Code: FJHL.
Q80: (Number Coding) If each letter is coded as its reverse alphabetical position plus 2, what is the code for 'CAT'?
A) 26-28-25
B) 25-27-24
C) 26-27-25
D) 25-28-24
Answer: A) 26-28-25
Explanation: Reverse: C=24→26 (+2), A=26→28 (+2), T=23→25 (+2). Code: 26-28-25.
Q81: (Mixed Coding) If 'MOON' is coded as '3#RS', how is 'STAR' coded?
A) 2#XY
B) 3#XY
C) 2#YZ
D) 3#YZ
Answer: A) 2#XY
Explanation: MOON → 3#RS: M(13)→3 (vowel count+1=2+1), O→#, O(15)→R(18): +3, N(14)→S(19): +5. Pattern: Vowel count+1, vowel→#, +3, +5. STAR: 1 vowel+1=2, A→#, T(20)→W(23): +3, R(18)→W(23): +5. Code: 2#XY.
Q82: (Word Coding) If 'pen' is coded as 'brush', 'paper' as 'canvas', and 'ink' as 'paint', what is the code for 'ink paper pen'?
A) paint canvas brush
B) brush paint canvas
C) canvas brush paint
D) paint brush canvas
Answer: A) paint canvas brush
Explanation: ink→paint, paper→canvas, pen→brush. For 'ink paper pen': ink→paint, paper→canvas, pen→brush. Code: paint canvas brush.
Q83: (Substitution Coding) If all consonants are replaced with '', how is 'WAVE' coded?
A) AE
B) WV*
C) AV
D) WVE
Answer: A) AE
Explanation: Consonants: W, V. Replace with ''. Code: AE.
Q84: (Conditional Coding) If the word has more than 4 letters, add 3 to each letter; otherwise, subtract 3. How is 'TIGER' coded?
A) WJHLV
B) SFHIT
C) QEGFM
D) UFKNS
Answer: A) WJHLV
Explanation: TIGER: 5 letters, so +3. T(20)→W(23), I(9)→L(12), G(7)→J(10), E(5)→I(8), R(18)→U(21). Code: WJHLV.
Q85: (Letter Coding) If 'WOLF' is coded as 'ZTKM', how is 'SING' coded?
A) VQKR
B) WRLS
C) XSMU
D) YTOV
Answer: A) VQKR
Explanation: WOLF → ZTKM: W(23)→Z(25): +2, O(15)→T(20): +5, L(12)→K(11): -1, F(6)→M(13): +7. Pattern: +2, +5, -1, +7. SING: S(19)→U(21): +2, I(9)→N(14): +5, N(14)→M(13): -1, G(7)→N(14): +7. Code: VQKR.
Q86: (Number Coding) If each letter is coded as its alphabetical position multiplied by 4, what is the code for 'DOG'?
A) 16-60-28
B) 12-56-24
C) 16-56-28
D) 12-60-24
Answer: A) 16-60-28
Explanation: D=4→16 (×4), O=15→60 (×4), G=7→28 (×4). Code: 16-60-28.
Q87: (Mixed Coding) If 'RAT' is coded as '4#Y', how is 'KEY' coded?
A) 3#A
B) 4#A
C) 3#B
D) 4#B
Answer: A) 3#A
Explanation: RAT → 4#Y: R(18)→4 (vowel count+3=1+3), A→#, T(20)→Y(25): +5. Pattern: Vowel count+3, vowel→#, +5. KEY: 1 vowel+3=4, E→#, Y(25)→I(9): +5 (mod 26). Code: 3#A.
Q88: (Word Coding) If 'sky' is coded as 'cloud', 'cloud' as 'rain', and 'rain' as 'storm', what is the code for 'cloud sky rain'?
A) rain cloud storm
B) storm rain cloud
C) cloud storm rain
D) rain storm cloud
Answer: A) rain cloud storm
Explanation: cloud→rain, sky→cloud, rain→storm. For 'cloud sky rain': cloud→rain, sky→cloud, rain→storm. Code: rain cloud storm.
Q89: (Substitution Coding) If all vowels are replaced with '@', how is 'FIRE' coded?
A) F@R@
B) @IR@
C) F@RE
D) FI@E
Answer: A) F@R@
Explanation: Vowels: I, E. Replace with '@'. Code: F@R@.
Q90: (Conditional Coding) If the first letter is a vowel, add 3 to each letter; otherwise, subtract 3. How is 'SING' coded?
A) PJAF
B) VQKR
C) AFOT
D) IZAF
Answer: A) PJAF
Explanation: First letter S (consonant), so -3. S(19)→P(16), I(9)→F(6), N(14)→K(11), G(7)→D(4). Code: PJAF.
Q91: (Letter Coding) If 'CAT' is coded as 'IFX', how is 'DOG' coded?
A) KTI
B) LUJ
C) MVK
D) NXL
Answer: A) KTI
Explanation: CAT → IFX: C(3)→I(9): +6, A(1)→F(6): +5, T(20)→X(24): +4. Pattern: +6, +5, +4. DOG: D(4)→J(10): +6, O(15)→T(20): +5, G(7)→K(11): +4. Code: KTI.
Q92: (Number Coding) If each letter is coded as its alphabetical position minus 4, what is the code for 'MOON'?
A) 9-11-11-10
B) 10-12-12-11
C) 8-10-10-9
D) 9-11-11-9
Answer: A) 9-11-11-10
Explanation: M=13→9 (-4), O=15→11 (-4), O=15→11 (-4), N=14→10 (-4). Code: 9-11-11-10.
Q93: (Mixed Coding) If 'WOLF' is coded as '3#IZ', how is 'SING' coded?
A) 3#PK
B) 4#PK
C) 3#OL
D) 4#OL
Answer: A) 3#PK
Explanation: WOLF → 3#IZ: W(23)→3 (vowel count+1=2+1), O→#, L(12)→I(9): -3, F(6)→Z(26): +20. Pattern: Vowel count+1, vowel→#, -3, +20. SING: 2 vowels+1=3, I→#, N(14)→K(11): -3, G(7)→I(9): +20 (mod 26). Code: 3#PK.
Q94: (Word Coding) If 'dog' is coded as 'cat', 'cat' as 'bird', and 'bird' as 'fish', what is the code for 'cat dog bird'?
A) bird cat fish
B) fish bird cat
C) cat fish bird
D) bird fish cat
Answer: A) bird cat fish
Explanation: cat→bird, dog→cat, bird→fish. For 'cat dog bird': cat→bird, dog→cat, bird→fish. Code: bird cat fish.
Q95: (Substitution Coding) If all consonants are replaced with '#', how is 'TRAIN' coded?
A) #R#I#
B) T#A#N
C) #RA#N
D) T#AI#
Answer: A) #R#I#
Explanation: Consonants: T, R, N. Replace with '#'. Code: #R#I#.
Q96: (Conditional Coding) If the word has an even number of letters, add 3 to each letter; otherwise, subtract 3. How is 'FANS' coded?
A) CFIL
B) IBPV
C) ZAFI
D) YZAF
Answer: B) IBPV
Explanation: FANS: 4 letters (even), so +3. F(6)→I(9), A(1)→D(4), N(14)→Q(17), S(19)→V(22). Code: IBPV.
Q97: (Letter Coding) If 'SING' is coded as 'WOTV', how is 'BARK' coded?
A) IJHL
B) JKIM
C) KLJN
D) LMKO
Answer: A) IJHL
Explanation: SING → WOTV: S(19)→W(23): +4, I(9)→O(15): +6, N(14)→T(20): +6, G(7)→V(22): +15. Pattern: +4, +6, +6, +15. BARK: B(2)→F(6): +4, A(1)→G(7): +6, R(18)→I(9): +6 (mod 26), K(11)→I(9): +15 (mod 26). Code: IJHL.
Q98: (Number Coding) If each letter is coded as its alphabetical position plus 6, what is the code for 'KEY'?
A) 17-11-31
B) 16-10-30
C) 17-10-31
D) 16-11-30
Answer: A) 17-11-31
Explanation: K=11→17 (+6), E=5→11 (+6), Y=25→31 (+6). Code: 17-11-31.
Q99: (Mixed Coding) If 'BARK' is coded as '4$FJ', how is 'WOLF' coded?
A) 4$IZ
B) 3$IZ
C) 4$JY
D) 3$JY
Answer: A) 4$IZ
Explanation: BARK → 4$FJ: B(2)→4 (vowel count+3=1+3), A→$, R(18)→F(6): -12, K(11)→J(10): -1. Pattern: Vowel count+3, vowel→$, -12, -1. WOLF: 2 vowels+3=5, O→$, L(12)→A(1): -11, F(6)→E(5): -1. Code: 4$IZ.
Q100: (Word Coding) If 'apple' is coded as 'orange', 'orange' as 'grape', and 'grape' as 'mango', what is the code for 'orange apple grape'?
A) grape orange mango
B) mango grape orange
C) orange mango grape
D) grape mango orange
Answer: A) grape orange mango
Explanation: orange→grape, apple→orange, grape→mango. For 'orange apple grape': orange→grape, apple→orange, grape→mango. Code: grape orange mango.
Practice Questions Coding Decoding MCQ
Question 1: If 'RAT' is coded as 'VEX', how is 'FOX' coded?
Answer: D) KUA
Explanation: RAT → VEX: R(18)→V(22): +4, A(1)→E(5): +4, T(20)→X(24): +4. Pattern: +4 to each letter. Apply to FOX: F(6)→J(10): +4, O(15)→S(19): +4, X(24)→B(2): +4 (mod 26). Code: KUA.
Question 2: If 'LAMP' is coded as 'NCSU', how is 'GLOW' coded?
Answer: B) JQBD
Explanation: LAMP → NCSU: L(12)→N(14): +2, A(1)→C(3): +2, M(13)→S(19): +6, P(16)→U(21): +5. Pattern: +2, +2, +6, +5. Apply to GLOW: G(7)→I(9): +2, L(12)→N(14): +2, O(15)→U(21): +6, W(23)→I(2): +5 (mod 26). Code: JQBD.
Question 3: If 'BARK' is coded as 'AFOT', how is 'SING' coded?
Answer: D) PJAF
Explanation: BARK → AFOT: B(2)→A(1): -1, A(1)→F(6): +5, R(18)→O(15): -3, K(11)→T(20): +9. Pattern: -1, +5, -3, +9. Apply to SING: S(19)→R(18): -1, I(9)→N(14): +5, N(14)→K(11): -3, G(7)→O(15): +8. Code: PJAF.
Question 4: If 'TIGER' is coded as 'VMLKY', how is 'LION' coded?
Answer: C) NKSV
Explanation: TIGER → VMLKY: T(20)→V(22): +2, I(9)→M(13): +4, G(7)→L(12): +5, E(5)→K(11): +6, R(18)→Y(25): +7. Pattern: +2, +4, +5, +6, +7. Apply to LION: L(12)→N(14): +2, I(9)→M(13): +4, O(15)→T(20): +5, N(14)→T(20): +6. Code: NKSV.
Question 5: If 'CANE' is coded as 'AFMJ', how is 'WOLF' coded?
Answer: B) ULBG
Explanation: CANE → AFMJ: C(3)→A(1): -2, A(1)→F(6): +5, N(14)→M(13): -1, E(5)→J(10): +5. Pattern: -2, +5, -1, +5. Apply to WOLF: W(23)→U(21): -2, O(15)→T(20): +5, L(12)→K(11): -1, F(6)→K(11): +5. Code: ULBG.
Question 6: If each letter is coded by its alphabetical position (A=1, B=2, ..., Z=26), what is the code for 'SPARK'?
Answer: A) 19-16-1-18-11
Explanation: S=19, P=16, A=1, R=18, K=11. Code: 19-16-1-18-11.
Question 7: If each letter is coded by its reverse alphabetical position (Z=1, Y=2, ..., A=26), what is the code for 'MOON'?
Answer: A) 13-12-12-13
Explanation: Reverse: Z=1, ..., A=26. M=14, O=12, O=12, N=13. Code: 13-12-12-13.
Question 8: If each letter is coded as its alphabetical position multiplied by 2, what is the code for 'FAN'?
Answer: A) 12-2-14
Explanation: F=6→12 (×2), A=1→2 (×2), N=7→14 (×2). Code: 12-2-14.
Question 9: If each letter is coded as its alphabetical position plus its position in the word, what is the code for 'KEY'?
Answer: A) 12-6-26
Explanation: K=11 (1st, +1)→12, E=5 (2nd, +2)→7, Y=25 (3rd, +3)→28. Code: 12-6-26.
Question 10: If each letter is coded as its alphabetical position minus 1, what is the code for 'WIND'?
Answer: A) 22-8-13-3
Explanation: W=23→22 (-1), I=9→8 (-1), N=14→13 (-1), D=4→3 (-1). Code: 22-8-13-3.
Question 11: If 'CANE' is coded as '5@PK', how is 'FANS' coded?
Answer: B) 4@UA
Explanation: CANE → 5@PK: C(3)→5 (vowel count+1=2+3), A→@, N(14)→P(16): +2, E(5)→K(11): +6. Pattern: Vowel count+1, vowel→@, +2, +6. FANS: 1 vowel+3=4, A→@, N(14)→P(16): +2, S(19)→Y(25): +6. Code: 4@UA.
Question 12: If 'RAT' is coded as 'T2W', how is 'DOG' coded?
Answer: C) I3I
Explanation: RAT → T2W: R(18)→T(20): +2, A (1 vowel→2), T(20)→W(23): +3. Pattern: +2, vowel count, +3. DOG: D(4)→F(6): +2, O (1 vowel→3), G(7)→I(9): +2. Code: I3I.
Question 13: If 'LION' is coded as '2QSV', how is 'TIGER' coded?
Answer: D) 3YPLC
Explanation: LION → 2QSV: L(12)→2 (vowel count: 2), I(9)→Q(17): +8, O(15)→S(19): +4, N(14)→V(22): +8. Pattern: Vowel count, +8, +4, +8. TIGER: 3 vowels→3, T(20)→B(2): +8 (mod 26), I(9)→M(13): +4, G(7)→O(15): +8, E(5)→M(13): +8. Code: 3YPLC.
Question 14: If 'MOON' is coded as '#RRS', how is 'STAR' coded?
Answer: A) #WYZ
Explanation: MOON → #RRS: M(13)→#, O(15)→R(18): +3, O(15)→R(18): +3, N(14)→S(19): +5. Pattern: First→#, +3, +3, +5. STAR: S(19)→#, T(20)→W(23): +3, A(1)→E(5): +4, R(18)→Z(25): +7. Code: #WYZ.
Question 15: If 'FAN' is coded as '3$J', how is 'WOLF' coded?
Answer: C) 4$I
Explanation: FAN → 3$J: F(6)→3 (vowel count+2=1+2), A→$, N(14)→J(10): -4. Pattern: Vowel count+2, vowel→$, last-4. WOLF: 2 vowels+2=4, O→$, F(6)→B(2): -4. Code: 4$I.
Question 16: If 'apple' is coded as 'fruit', 'banana' as 'juice', and 'cherry' as 'jam', what is the code for 'apple cherry banana'?
Answer: A) fruit jam juice
Explanation: apple→fruit, cherry→jam, banana→juice. For 'apple cherry banana': apple→fruit, cherry→jam, banana→juice. Code: fruit jam juice.
Question 17: If 'pen' is coded as 'eraser', 'paper' as 'book', and 'ink' as 'pencil', what is the code for 'ink pen paper'?
Answer: A) pencil eraser book
Explanation: ink→pencil, pen→eraser, paper→book. For 'ink pen paper': ink→pencil, pen→eraser, paper→book. Code: pencil eraser book.
Question 18: If 'dog' is coded as 'cat', 'cat' as 'bird', and 'bird' as 'fish', what is the code for 'cat dog'?
Answer: A) bird cat
Explanation: cat→bird, dog→cat. For 'cat dog': cat→bird, dog→cat. Code: bird cat.
Question 19: If 'sun' is coded as 'moon', 'moon' as 'star', and 'star' as 'cloud', what is the code for 'moon star sun'?
Answer: A) star cloud moon
Explanation: moon→star, star→cloud, sun→moon. For 'moon star sun': moon→star, star→cloud, sun→moon. Code: star cloud moon.
Question 20: If 'rose' is coded as 'lily', 'lily' as 'tulip', and 'tulip' as 'daisy', what is the code for 'tulip rose'?
Answer: A) daisy lily
Explanation: tulip→daisy, rose→lily. For 'tulip rose': tulip→daisy, rose→lily. Code: daisy lily.
Question 21: If all vowels are replaced with '*', how is 'SOUND' coded?
Answer: A) S**ND
Explanation: Vowels (A, E, I, O, U). In 'SOUND', O and U are vowels. Replace O and U with '*'. Code: S**ND.
Question 22: If all consonants are replaced with '#', how is 'RIVER' coded?
Answer: A) #I#E#
Explanation: Consonants: R, V, R. Replace R, V, R with '#'. Code: #I#E#.
Question 23: If the second and third letters are swapped, how is 'PLANE' coded?
Answer: A) PALNE
Explanation: Swap second (L) and third (A). PLANE→PALNE. Code: PALNE.
Question 24: If each letter is replaced with the previous letter in the alphabet, how is 'MOON' coded?
Answer: A) LNNM
Explanation: M(13)→L(12), O(15)→N(14), O(15)→N(14), N(14)→M(13). Code: LNNM.
Question 25: If all letters are replaced with their reverse alphabetical counterparts (A↔Z, B↔Y, ..., Z↔A), how is 'WIND' coded?
Answer: A) DJMR
Explanation: W(23)↔D(4), I(9)↔R(18), N(14)↔M(13), D(4)↔W(23). Code: DJMR.
Question 26: If the first letter is a consonant, subtract 2 from each letter’s position; otherwise, add 2. How is 'BARK' coded?
Answer: A) ZYFI
Explanation: First letter B (consonant), so -2. B(2)→Z(26), A(1)→Y(25), R(18)→P(16), K(11)→I(9). Code: ZYFI.
Question 27: If the word has more than 4 letters, add 1 to each letter; otherwise, reverse the word. How is 'TIGER' coded?
Answer: A) UJHFS
Explanation: TIGER: 5 letters (>4), so +1. T(20)→U(21), I(9)→J(10), G(7)→H(8), E(5)→F(6), R(18)→S(19). Code: UJHFS.
Question 28: If the last letter is a vowel, swap the first and last letters; otherwise, add 3 to each letter. How is 'FANS' coded?
Answer: B) IBPV
Explanation: Last letter S (consonant), so +3. F(6)→I(9), A(1)→D(4), N(14)→Q(17), S(19)→V(22). Code: IBPV.
Question 29: If the word has an even number of letters, add 2 to each letter; otherwise, subtract 1. How is 'MOON' coded?
Answer: B) OPQP
Explanation: MOON: 4 letters (even), so +2. M(13)→O(15), O(15)→Q(17), O(15)→Q(17), N(14)→P(16). Code: OPQP.
Question 30: If the first letter is a vowel, reverse the word; otherwise, add 1 to each letter. How is 'SING' coded?
Answer: A) TJOH
Explanation: First letter S (consonant), so +1. S(19)→T(20), I(9)→J(10), N(14)→O(15), G(7)→H(8). Code: TJOH.
