Reasoning – Coding-Decoding Advanced (Patterns, Tricks & Exam Questions)
Advanced coding-decoding includes complex patterns such as mixed coding, reverse coding, and position-based logic. Understanding patterns is the key to solving quickly.
Type 1: Mixed Pattern
Example:
CAT → DBV
C → D (+1)
A → B (+1)
T → V (+2)
Tip: Pattern may change for different letters.
Type 2: Position + Shift
Example:
CAT → 3 1 20 → +1 → 4 2 21 → DBU
First convert to numbers, then apply change.
Type 3: Reverse + Shift
Example:
CAT → TAC → UBD
Step 1: Reverse
Step 2: Apply +1 pattern
Type 4: Alphabet Opposite
A ↔ Z
B ↔ Y
C ↔ X
Example:
CAT → XZG
Example Questions
Q1:
CAT → DBV
DOG → ?
Answer:
D → E
O → P
G → I
→ EPI ✔
Q2:
CAT → TAC → UBD
DOG → ?
Answer:
DOG → GOD → HPE ✔
Practice Questions
Q1: BAT → CBU → DOG → ?
Q2: CAT → XZG → SUN → ?
Q3: DOG → GOD → HPE → CAT → ?
Answers
Q1: EPH
Q2: HFM
Q3: UBD
Quick Tricks
- Check simple shift first (+1 / -1)
- Then check reverse pattern
- Look for position-based logic
- Do not panic, patterns are simple
Final Tip
Advanced coding-decoding becomes easy if you practice different patterns regularly. Focus on identifying the pattern quickly.
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