🎯 RankerClub is 100% Free — 97 full-length mock tests with an instant all-India rank. Register Free →
RankerClub
Log in Get Started Free
Log in Register Free

RRB NTPC Coding-Decoding Questions with Answers & Explanations

20 Coding-Decoding questions from the General Intelligence & Reasoning section of RRB NTPC, 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.

Take the General Intelligence & Reasoning test → RRB NTPC full mocks
Question 1

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

  1. A23
  2. B27
  3. C24
  4. D28
Show answer
Answer: (C) 24 Add the alphabet positions of the letters: 3 + 1 + 20 = 24.
Question 2

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

  1. ABHQRP
  2. BQSRIC
  3. CPRQHB
  4. DJLKBV
Show answer
Answer: (C) PRQHB Each letter is shifted 3 place(s) forward.
Question 3

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

  1. A26
  2. B23
  3. C19
  4. D27
Show answer
Answer: (B) 23 Add the alphabet positions of the letters: 2 + 1 + 20 = 23.
Question 4

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

  1. A34
  2. B39
  3. C35
  4. D32
Show answer
Answer: (C) 35 Add the alphabet positions of the letters: 16 + 5 + 14 = 35.
Question 5

In a certain code language, GLASS is written as FKZRR. How is BREAD written in that code?

  1. ABREAD
  2. BCSFBE
  3. CAQDZC
  4. DCZDQA
Show answer
Answer: (C) AQDZC Each letter is shifted 1 place(s) backward.
Question 6

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

  1. A56
  2. B54
  3. C52
  4. D58
Show answer
Answer: (B) 54 Add the alphabet positions of the letters: 19 + 21 + 14 = 54.
Question 7

In a certain code language, STONE is written as VWRQH. How is MONEY written in that code?

  1. APRQHB
  2. BSUTKE
  3. CBHQRP
  4. DJLKBV
Show answer
Answer: (A) PRQHB Each letter is shifted 3 place(s) forward.
Question 8

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

  1. A51
  2. B54
  3. C48
  4. D55
Show answer
Answer: (A) 51 Add the alphabet positions of the letters: 20 + 15 + 16 = 51.
Question 9

In a certain code language, TIGER is written as UJHFS. How is STONE written in that code?

  1. AFOPUT
  2. BTUPOF
  3. CRSNMD
  4. DUVQPG
Show answer
Answer: (B) TUPOF Each letter is shifted 1 place(s) forward.
Question 10

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

  1. A45
  2. B41
  3. C37
  4. D40
Show answer
Answer: (B) 41 Add the alphabet positions of the letters: 3 + 15 + 23 = 41.

Ready for the real thing?
Timed General Intelligence & Reasoning test · 30 questions · instant rank

Start free test
Question 11

In a certain code language, CHAIR is written as FKDLU. How is STONE written in that code?

  1. AHQRWV
  2. BVWRQH
  3. CPQLKB
  4. DWXSRI
Show answer
Answer: (B) VWRQH Each letter is shifted 3 place(s) forward.
Question 12

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

  1. A40
  2. B38
  3. C45
  4. D41
Show answer
Answer: (D) 41 Add the alphabet positions of the letters: 2 + 15 + 24 = 41.
Question 13

In a certain code language, HOUSE is written as KRXVH. How is CHAIR written in that code?

  1. AFKDLU
  2. BZEXFO
  3. CGLEMV
  4. DULDKF
Show answer
Answer: (A) FKDLU Each letter is shifted 3 place(s) forward.
Question 14

If BAT = 23 (sum of letter positions), then BUS = ?

  1. A39
  2. B43
  3. C40
  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, TIGER is written as SHFDQ. How is LIGHT written in that code?

  1. AMJHIU
  2. BKHFGS
  3. CLIGHT
  4. DJGEFR
Show answer
Answer: (B) KHFGS Each letter is shifted 1 place(s) backward.
Question 16

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

  1. A24
  2. B26
  3. C27
  4. D28
Show answer
Answer: (C) 27 Add the alphabet positions of the letters: 8 + 5 + 14 = 27.
Question 17

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

  1. AUHWDZ
  2. BZDWHU
  3. CCGZKX
  4. DTXQBO
Show answer
Answer: (B) ZDWHU Each letter is shifted 3 place(s) forward.
Question 18

If BAT = 23 (sum of letter positions), then BOX = ?

  1. A40
  2. B41
  3. C42
  4. D39
Show answer
Answer: (B) 41 Add the alphabet positions of the letters: 2 + 15 + 24 = 41.
Question 19

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

  1. ASFWJS
  2. BSJWFS
  3. CQHUDQ
  4. DTKXGT
Show answer
Answer: (B) SJWFS Each letter is shifted 1 place(s) forward.
Question 20

If BAT = 23 (sum of letter positions), then FAN = ?

  1. A21
  2. B24
  3. C20
  4. D18
Show answer
Answer: (A) 21 Add the alphabet positions of the letters: 6 + 1 + 14 = 21.

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

More General Intelligence & Reasoning topics

Alphabet & Word Order 25 Qs Series 24 Qs Order & Ranking 24 Qs Analogy 24 Qs Classification 21 Qs Syllogism 21 Qs Counting & Patterns 21 Qs Calendar 21 Qs

All RRB NTPC topics →