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Home › Railway › Coding-Decoding

Coding-Decoding — Railway Questions & Practice

Practise 120 Coding-Decoding questions from Railway for competitive exams such as UPSC, Banking, SSC and Railway. Read the worked questions below, check every answer with an explanation, and track what you get wrong.

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Practice questions on Coding-Decoding — with answers

Try each question first, then open the answer. Explanations are included.

1. In a certain code, each letter is shifted forward by 3 place(s) in the alphabet. If 'GUARD' is coded using this rule, what is the code for 'GUARD'?

  1. AKYEVH
  2. BJXDUG
  3. CWUDFN
  4. DIWCTF
Show answer

Answer: B

Each letter is shifted forward by 3 place(s). Applying this to 'GUARD' gives 'JXDUG'.

2. In a certain code, each letter is shifted forward by 1 place(s) in the alphabet. If 'DRIVER' is coded using this rule, what is the code for 'DRIVER'?

  1. AFTKXGT
  2. BGULYHU
  3. CUSBJO
  4. DESJWFS
Show answer

Answer: D

Each letter is shifted forward by 1 place(s). Applying this to 'DRIVER' gives 'ESJWFS'.

3. In a certain code, each letter is shifted forward by 7 place(s) in the alphabet. If 'WAGON' is coded using this rule, what is the code for 'WAGON'?

  1. ALUNPUL
  2. BCGMUT
  3. CDHNVU
  4. DEIOWV
Show answer

Answer: C

Each letter is shifted forward by 7 place(s). Applying this to 'WAGON' gives 'DHNVU'.

4. In a certain code, each letter is shifted forward by 2 place(s) in the alphabet. If 'STATION' is coded using this rule, what is the code for 'STATION'?

  1. ARNCVHQTO
  2. BTUBUJPO
  3. CVWDWLRQ
  4. DUVCVKQP
Show answer

Answer: D

Each letter is shifted forward by 2 place(s). Applying this to 'STATION' gives 'UVCVKQP'.

5. In a certain code, each letter is shifted forward by 4 place(s) in the alphabet. If 'STATION' is coded using this rule, what is the code for 'STATION'?

  1. AALMWXPI
  2. BVWDWLRQ
  3. CWXEXMSR
  4. DXYFYNTS
Show answer

Answer: C

Each letter is shifted forward by 4 place(s). Applying this to 'STATION' gives 'WXEXMSR'.

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