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SSC CPO Coding-Decoding Questions with Answers & Explanations

20 Coding-Decoding questions from the General Intelligence & Reasoning section of SSC CPO, each with the correct answer and a worked explanation. Try each question first, then tap Show answer to check. When you're ready, take the timed chapter-wise test to see your all-India rank.

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Question 1

In a certain code language, CHAIR is written as EJCKT. How is SMILE written in that code?

  1. AVPLOH
  2. BGNKOU
  3. CUOKNG
  4. DQKGJC
Show answer
Answer: (C) UOKNG Each letter is shifted 2 place(s) forward.
Question 2

If CUP = 40 (sum of letter positions), then PEN = ?

  1. A35
  2. B33
  3. C36
  4. D32
Show answer
Answer: (A) 35 Add the alphabet positions of the letters: 16 + 5 + 14 = 35.
Question 3

If MAP = 30 (sum of letter positions), then TOP = ?

  1. A50
  2. B47
  3. C51
  4. D49
Show answer
Answer: (C) 51 Add the alphabet positions of the letters: 20 + 15 + 16 = 51.
Question 4

In a certain code language, SMILE is written as QKGJC. How is TABLE written in that code?

  1. ACJZYR
  2. BPWXHA
  3. CVCDNG
  4. DRYZJC
Show answer
Answer: (D) RYZJC Each letter is shifted 2 place(s) backward.
Question 5

If DOG = 26 (sum of letter positions), then BAT = ?

  1. A23
  2. B24
  3. C27
  4. D19
Show answer
Answer: (A) 23 Add the alphabet positions of the letters: 2 + 1 + 20 = 23.
Question 6

In a certain code language, PLANT is written as QMBOU. How is TABLE written in that code?

  1. AFMCBU
  2. BVCDNG
  3. CUBCMF
  4. DSZAKD
Show answer
Answer: (C) UBCMF Each letter is shifted 1 place(s) forward.
Question 7

In a certain code language, TABLE is written as RYZJC. How is CHAIR written in that code?

  1. AEJCKT
  2. BYDWEN
  3. CAFYGP
  4. DBGZHQ
Show answer
Answer: (C) AFYGP Each letter is shifted 2 place(s) backward.
Question 8

If CUP = 40 (sum of letter positions), then BOX = ?

  1. A38
  2. B41
  3. C40
  4. D45
Show answer
Answer: (B) 41 Add the alphabet positions of the letters: 2 + 15 + 24 = 41.
Question 9

In a certain code language, PLANT is written as OKZMS. How is TABLE written in that code?

  1. ASZAKD
  2. BTABLE
  3. CRYZJC
  4. DUBCMF
Show answer
Answer: (A) SZAKD Each letter is shifted 1 place(s) backward.
Question 10

If MAP = 30 (sum of letter positions), then HEN = ?

  1. A31
  2. B30
  3. C27
  4. D23
Show answer
Answer: (C) 27 Add the alphabet positions of the letters: 8 + 5 + 14 = 27.

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Question 11

In a certain code language, CHAIR is written as DIBJS. How is BRICK written in that code?

  1. ALDJSC
  2. BCSJDL
  3. CAQHBJ
  4. DDTKEM
Show answer
Answer: (B) CSJDL Each letter is shifted 1 place(s) forward.
Question 12

If MAP = 30 (sum of letter positions), then FAN = ?

  1. A23
  2. B19
  3. C21
  4. D17
Show answer
Answer: (C) 21 Add the alphabet positions of the letters: 6 + 1 + 14 = 21.
Question 13

In a certain code language, QUEEN is written as RVFFO. How is GLASS written in that code?

  1. AINCUU
  2. BTTBMH
  3. CFKZRR
  4. DHMBTT
Show answer
Answer: (D) HMBTT Each letter is shifted 1 place(s) forward.
Question 14

If COW = 41 (sum of letter positions), then BAT = ?

  1. A23
  2. B20
  3. C22
  4. D21
Show answer
Answer: (A) 23 Add the alphabet positions of the letters: 2 + 1 + 20 = 23.
Question 15

In a certain code language, PAPER is written as OZODQ. How is STONE written in that code?

  1. AQRMLC
  2. BSTONE
  3. CRSNMD
  4. DTUPOF
Show answer
Answer: (C) RSNMD Each letter is shifted 1 place(s) backward.
Question 16

If HEN = 27 (sum of letter positions), then BAT = ?

  1. A23
  2. B22
  3. C26
  4. D27
Show answer
Answer: (A) 23 Add the alphabet positions of the letters: 2 + 1 + 20 = 23.
Question 17

In a certain code language, CLOUD is written as DMPVE. How is BREAD written in that code?

  1. ACSFBE
  2. BEBFSC
  3. CAQDZC
  4. DDTGCF
Show answer
Answer: (A) CSFBE Each letter is shifted 1 place(s) forward.
Question 18

If PEN = 35 (sum of letter positions), then BOX = ?

  1. A37
  2. B41
  3. C38
  4. D42
Show answer
Answer: (B) 41 Add the alphabet positions of the letters: 2 + 15 + 24 = 41.
Question 19

In a certain code language, PLANT is written as OKZMS. How is SMILE written in that code?

  1. AQKGJC
  2. BDKHLR
  3. CTNJMF
  4. DRLHKD
Show answer
Answer: (D) RLHKD Each letter is shifted 1 place(s) backward.
Question 20

If SUN = 54 (sum of letter positions), then PEN = ?

  1. A38
  2. B35
  3. C37
  4. D34
Show answer
Answer: (B) 35 Add the alphabet positions of the letters: 16 + 5 + 14 = 35.

These are RankerClub practice questions written in the SSC CPO pattern. They are not official SSC/IBPS/RRB papers.

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