Paper I · 16 Logical Reasoning, Analytical Ability & Data Interpretation · 16.9 Coding–decoding

16.9.1 Letter coding: shifting, reversal and position values

In letter coding every letter of a word is changed by one rule (a shift, an opposite, a reversal of order, or a mix); write the word and its code one above the other, find the rule letter by letter, and apply it.

  • TGPSC MPSO / ASO · Paper I
  • Standard level
  • 7 min read
  • Full course

Key terms

  • coding-decoding
  • letter shift
  • forward shift
  • backward shift
  • opposite letters
  • reversal
  • alternate shift
  • increasing shift
  • pair swap
  • halves reversed
  • vowel and consonant rule
  • neighbouring letters
  • first and last interchanged
  • decoding

What this note covers

  1. Core factsFoundation
  2. ExplainedStandard
  3. DeeperAdvanced
  4. Common trapsFoundation
  5. Quick revisionFoundation

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