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CRPF CT/CISF HC Coding-Decoding Questions with Answers & Explanations

20 Coding-Decoding questions from the General Intelligence & Reasoning section of CRPF CT/CISF HC, 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, TABLE is written as RYZJC. How is SMILE written in that code?

  1. ARLHKD
  2. BQKGJC
  3. COIEHA
  4. DUOKNG
Show answer
Answer: (B) QKGJC Each letter is shifted 2 place(s) backward.
Question 2

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

  1. A28
  2. B30
  3. C26
  4. D31
Show answer
Answer: (B) 30 Add the alphabet positions of the letters: 13 + 1 + 16 = 30.
Question 3

In a certain code language, TABLE is written as UBCMF. How is FRUIT written in that code?

  1. AGSVJU
  2. BEQTHS
  3. CUJVSG
  4. DHTWKV
Show answer
Answer: (A) GSVJU Each letter is shifted 1 place(s) forward.
Question 4

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

  1. A42
  2. B43
  3. C40
  4. D39
Show answer
Answer: (A) 42 Add the alphabet positions of the letters: 2 + 21 + 19 = 42.
Question 5

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

  1. AVCDNG
  2. BRYZJC
  3. CWDEOH
  4. DXEFPI
Show answer
Answer: (A) VCDNG Each letter is shifted 2 place(s) forward.
Question 6

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

  1. A42
  2. B46
  3. C39
  4. D44
Show answer
Answer: (A) 42 Add the alphabet positions of the letters: 2 + 21 + 19 = 42.
Question 7

In a certain code language, MANGO is written as PDQJR. How is FRUIT written in that code?

  1. AIUXLW
  2. BJVYMX
  3. CCORFQ
  4. DWLXUI
Show answer
Answer: (A) IUXLW Each letter is shifted 3 place(s) forward.
Question 8

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

  1. A26
  2. B24
  3. C25
  4. D28
Show answer
Answer: (A) 26 Add the alphabet positions of the letters: 4 + 15 + 7 = 26.
Question 9

In a certain code language, STONE is written as TUPOF. How is GLASS written in that code?

  1. AHMBTT
  2. BFKZRR
  3. CINCUU
  4. DTTBMH
Show answer
Answer: (A) HMBTT Each letter is shifted 1 place(s) forward.
Question 10

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

  1. A51
  2. B52
  3. C47
  4. D54
Show answer
Answer: (A) 51 Add the alphabet positions of the letters: 20 + 15 + 16 = 51.

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Question 11

In a certain code language, BREAD is written as DTGCF. How is BRICK written in that code?

  1. ADTKEM
  2. BZPGAI
  3. CFVMGO
  4. DMEKTD
Show answer
Answer: (A) DTKEM Each letter is shifted 2 place(s) forward.
Question 12

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

  1. A47
  2. B50
  3. C51
  4. D54
Show answer
Answer: (C) 51 Add the alphabet positions of the letters: 20 + 15 + 16 = 51.
Question 13

In a certain code language, STONE is written as TUPOF. How is MANGO written in that code?

  1. AOCPIQ
  2. BPHOBN
  3. CLZMFN
  4. DNBOHP
Show answer
Answer: (D) NBOHP Each letter is shifted 1 place(s) forward.
Question 14

If FAN = 21 (sum of letter positions), then BAT = ?

  1. A19
  2. B25
  3. C23
  4. D21
Show answer
Answer: (C) 23 Add the alphabet positions of the letters: 2 + 1 + 20 = 23.
Question 15

In a certain code language, RIVER is written as QHUDQ. How is MONEY written in that code?

  1. ANPOFZ
  2. BLNMDX
  3. CMONEY
  4. DXDMNL
Show answer
Answer: (B) LNMDX Each letter is shifted 1 place(s) backward.
Question 16

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

  1. A35
  2. B34
  3. C32
  4. D38
Show answer
Answer: (A) 35 Add the alphabet positions of the letters: 16 + 5 + 14 = 35.
Question 17

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

  1. ASWGGP
  2. BUYIIR
  3. COSCCL
  4. DPGGWS
Show answer
Answer: (A) SWGGP Each letter is shifted 2 place(s) forward.
Question 18

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

  1. A32
  2. B39
  3. C36
  4. D35
Show answer
Answer: (D) 35 Add the alphabet positions of the letters: 16 + 5 + 14 = 35.
Question 19

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

  1. ANKIJV
  2. BUIHJM
  3. CKHFGS
  4. DMJHIU
Show answer
Answer: (D) MJHIU Each letter is shifted 1 place(s) forward.
Question 20

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

  1. A22
  2. B21
  3. C18
  4. D24
Show answer
Answer: (B) 21 Add the alphabet positions of the letters: 6 + 1 + 14 = 21.

These are RankerClub practice questions written in the CRPF CT/CISF HC pattern. They are not official SSC/IBPS/RRB papers.

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