Bank Exam Coding-Decoding – Page 23 (Premium Guide)
Letter Coding • Number Coding • Pattern Logic • Exam Strategy
Core Concept
Coding-Decoding questions are based on identifying hidden patterns in letters or numbers.
- Alphabet positions (A=1, B=2… Z=26)
- Pattern shifts (+1, +2, −1, etc.)
- Reverse coding
Alphabet Position Table
A=1, B=2, C=3, D=4, E=5, F=6, G=7, H=8, I=9, J=10,
K=11, L=12, M=13, N=14, O=15, P=16, Q=17, R=18,
S=19, T=20, U=21, V=22, W=23, X=24, Y=25, Z=26
Letter Coding
Q1. CAT → DBU
C→D (+1), A→B (+1), T→U (+1)
DOG → EPH
Q2. BAT → DCV
+2 pattern
CAT → ECV
Q3. ABC → ZYX
Reverse coding
DEF → WVU
Number Coding
Q4. A=1, B=2, C=3
CAT = 3+1+20 = 24
Q5. DOG
4+15+7 = 26
Mixed Coding
Q6. CAT → 3120
C=3, A=1, T=20
Q7. BAT → 2120
B=2, A=1, T=20
Pattern-Based Coding
Q8. ABC → 135
A=1, B=3, C=5 (odd pattern)
Q9. DEF → ?
D=4, E=6, F=8 → 468
Advanced Coding
Q10. CAT → TAC
Reverse word
Q11. ABC → BCD
+1 shift
Q12. XYZ → YZA
Cyclic shift
Topper Tips
- Memorize alphabet positions
- Check shift pattern first
- Look for reverse or cyclic pattern
- Avoid confusion by writing positions
Exam Strategy
- Solve within 10–15 seconds
- Attempt easy pattern first
- Skip complex logic initially
Final Tip
Find Pattern → Apply Logic → Decode Quickly
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