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Coding-Decoding Complete Notes कूटलेखन एवं कूटवाचन सम्पूर्ण नोट्स

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Introduction / परिचय

In Coding-Decoding questions, letters, words or numbers are transformed according to a particular rule. You have to identify the rule and apply it to another word or number.

Coding-Decoding के प्रश्नों में अक्षरों, शब्दों या संख्याओं को किसी निश्चित नियम के अनुसार बदला जाता है। आपको उस नियम को पहचानकर दूसरे शब्द या संख्या पर लागू करना होता है।


Alphabet Positions / वर्णमाला स्थान

A=1, B=2, C=3 ... Z=26

Remember:

याद रखें:

A=1
E=5
J=10
M=13
N=14
T=20
Z=26


Opposite Letters / विपरीत अक्षर

A ↔ Z
B ↔ Y
C ↔ X
D ↔ W
E ↔ V
F ↔ U
G ↔ T
H ↔ S
I ↔ R
J ↔ Q
K ↔ P
L ↔ O
M ↔ N

Their positions add to 27.

इनके स्थानों का योग 27 होता है।


Type 1 — Forward Shift / आगे बढ़ाना

If:

यदि:

CAT → DBU

then each letter has moved +1.

प्रत्येक अक्षर को +1 आगे बढ़ाया गया है।

C→D
A→B
T→U


Type 2 — Backward Shift / पीछे करना

DOG → CNF

D→C
O→N
G→F

Each letter moves −1.

प्रत्येक अक्षर एक स्थान पीछे जाता है।


Type 3 — Opposite Letter Coding

विपरीत अक्षर कोडिंग

CAT

C→X
A→Z
T→G

Therefore:

CAT → XZG


Type 4 — Position Sum / स्थानों का योग

If a word is converted to the sum of its alphabet positions:

यदि शब्द के अक्षरों के स्थानों का योग लिया जाए:

CAT

C=3
A=1
T=20

3+1+20 = 24


Attempt our quiz : Coding-Decoding Practice Quiz – 30 Questions


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