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AFCAT Coding-Decoding Questions with Answers & Explanations

20 Coding-Decoding questions from the Reasoning & Military Aptitude section of AFCAT, 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 AFYGP. How is BREAD written in that code?

  1. AAQDZC
  2. BZPCYB
  3. CXNAWZ
  4. DDTGCF
Show answer
Answer: (B) ZPCYB Each letter is shifted 2 place(s) backward.
Question 2

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

  1. A42
  2. B45
  3. C43
  4. D41
Show answer
Answer: (D) 41 Add the alphabet positions of the letters: 3 + 15 + 23 = 41.
Question 3

In a certain code language, CHAIR is written as BGZHQ. How is TIGER written in that code?

  1. AUJHFS
  2. BTIGER
  3. CRGECP
  4. DSHFDQ
Show answer
Answer: (D) SHFDQ Each letter is shifted 1 place(s) backward.
Question 4

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

  1. A27
  2. B21
  3. C19
  4. D23
Show answer
Answer: (D) 23 Add the alphabet positions of the letters: 2 + 1 + 20 = 23.
Question 5

In a certain code language, RIVER is written as SJWFS. How is CHAIR written in that code?

  1. ASJBID
  2. BDIBJS
  3. CBGZHQ
  4. DEJCKT
Show answer
Answer: (B) DIBJS Each letter is shifted 1 place(s) forward.
Question 6

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

  1. A21
  2. B25
  3. C17
  4. D18
Show answer
Answer: (A) 21 Add the alphabet positions of the letters: 6 + 1 + 14 = 21.
Question 7

In a certain code language, BRICK is written as AQHBJ. How is HOUSE written in that code?

  1. AGNTRD
  2. BDRTNG
  3. CFMSQC
  4. DIPVTF
Show answer
Answer: (A) GNTRD Each letter is shifted 1 place(s) backward.
Question 8

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

  1. A54
  2. B51
  3. C50
  4. D55
Show answer
Answer: (A) 54 Add the alphabet positions of the letters: 19 + 21 + 14 = 54.
Question 9

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

  1. ABYCPZ
  2. BZPCYB
  3. CAQDZC
  4. DDTGCF
Show answer
Answer: (B) ZPCYB Each letter is shifted 2 place(s) backward.
Question 10

If CAT = 24 (sum of letter positions), then TOP = ?

  1. A48
  2. B49
  3. C51
  4. D53
Show answer
Answer: (C) 51 Add the alphabet positions of the letters: 20 + 15 + 16 = 51.

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Question 11

In a certain code language, FRUIT is written as EQTHS. How is BREAD written in that code?

  1. AAQDZC
  2. BBREAD
  3. CCSFBE
  4. DCZDQA
Show answer
Answer: (A) AQDZC Each letter is shifted 1 place(s) backward.
Question 12

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

  1. A36
  2. B40
  3. C44
  4. D43
Show answer
Answer: (B) 40 Add the alphabet positions of the letters: 3 + 21 + 16 = 40.
Question 13

In a certain code language, SMILE is written as RLHKD. How is GLASS written in that code?

  1. AGLASS
  2. BEJYQQ
  3. CFKZRR
  4. DRRZKF
Show answer
Answer: (C) FKZRR Each letter is shifted 1 place(s) backward.
Question 14

If CAT = 24 (sum of letter positions), then BUS = ?

  1. A43
  2. B40
  3. C44
  4. D42
Show answer
Answer: (D) 42 Add the alphabet positions of the letters: 2 + 21 + 19 = 42.
Question 15

In a certain code language, RIVER is written as ULYHU. How is TABLE written in that code?

  1. AXEFPI
  2. BZGHRK
  3. CWDEOH
  4. DQXYIB
Show answer
Answer: (C) WDEOH Each letter is shifted 3 place(s) forward.
Question 16

In a certain code language, MONEY is written as PRQHB. How is PAPER written in that code?

  1. AMXMBO
  2. BTETIV
  3. CUHSDS
  4. DSDSHU
Show answer
Answer: (D) SDSHU Each letter is shifted 3 place(s) forward.
Question 17

If BUS = 42 (sum of letter positions), then CUP = ?

  1. A44
  2. B40
  3. C42
  4. D38
Show answer
Answer: (B) 40 Add the alphabet positions of the letters: 3 + 21 + 16 = 40.
Question 18

In a certain code language, BRICK is written as DTKEM. How is TRAIN written in that code?

  1. ARPYGL
  2. BXVEMR
  3. CWUDLQ
  4. DVTCKP
Show answer
Answer: (D) VTCKP Each letter is shifted 2 place(s) forward.
Question 19

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

  1. A38
  2. B46
  3. C43
  4. D42
Show answer
Answer: (D) 42 Add the alphabet positions of the letters: 2 + 21 + 19 = 42.
Question 20

In a certain code language, TRAIN is written as WUDLQ. How is GLASS written in that code?

  1. AVVDOJ
  2. BKPEWW
  3. CDIXPP
  4. DJODVV
Show answer
Answer: (D) JODVV Each letter is shifted 3 place(s) forward.

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

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