Coding-Decoding

JKSSB Sub-Inspector (Executive) · Reasoning · 20 practice questions with answers and explanations: 8 Easy, 5 Medium, 7 Hard.

Sample questions

Sample Easy question 1

If in a certain code CAT is written as DBU, how is DOG written?

  1. EPH
  2. EPG
  3. FPH
  4. EQH
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Answer: A. Each letter is shifted forward by 1: D→E, O→P, G→H, giving EPH.

Sample Medium question 2

If RIVER is coded as SJWFS (each letter shifted forward by 1), how is OCEAN coded?

  1. PDFBO
  2. PDFBP
  3. PDEBO
  4. PDFCO
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Answer: A. Shifting each letter of OCEAN forward by 1 gives P,D,F,B,O = PDFBO.

Sample Hard question 3

If letters are coded in reverse order (A=26, B=25, ..., Z=1), what is the code for 'C'?

  1. 23
  2. 24
  3. 25
  4. 22
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Answer: B. C is the 3rd letter, so its reverse code = 26 - 3 + 1 = 24.

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