Coding-Decoding – Patterns & Shortcut Tricks
Coding-decoding questions test logical thinking and pattern recognition. Learn common patterns to solve quickly.
1. Letter Position Concept
A = 1, B = 2, C = 3 … Z = 26
Example:
CAT → 3, 1, 20
2. Reverse Position
Z = 1, Y = 2 … A = 26
Example:
A → 26, B → 25
3. Pattern Coding
Example:
If CAT → DBU
Each letter +1
C→D, A→B, T→U
4. Number Coding
Example:
DOG → 4+15+7 = 26
5. Mixed Coding
Combination of letters and numbers
Tough Problems
Q1:
If BAT = 23, find CAT
Solution:
B=2, A=1, T=20 → 23
C=3, A=1, T=20 → 24
Q2:
If DOG → EPH, find CAT
Solution:
+1 pattern
CAT → DBU
Q3:
If PEN → 35, find BOOK
Solution:
P=16, E=5, N=14 → 35
B=2, O=15, O=15, K=11 → 43
Exam Strategy
- Check letter position first
- Look for + / - pattern
- Try sum of positions
- Avoid overthinking
Shaktimatha Learning
Reasoning • Bank Exams • Competitive Preparation
Reasoning • Bank Exams • Competitive Preparation
Focused Study for Competitive Exams
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