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UPSC CSE
CSAT (Aptitude)
Analytical Reasoning
Coding and Decoding
Number Coding
Core Techniques
Sub-topic 2 of 3
CSAT (Aptitude)
Sub-topics in
Coding and Decoding
Letter Coding
01
Number Coding
02
Symbol Coding
03
CSAT (Aptitude)
·
Core Techniques
Number Coding — Core Techniques
Updated 5 Mar 2026
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Symbol Coding
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Letter Coding
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Coding and Decoding
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Symbol Coding
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Letter Coding
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