If MADRAS is NBESBT — Coding & Decoding Aptitude Question
If MADRAS is NBESBT: If MADRAS is coded as NBESBT, how is BOMBAY coded? Answer and worked solution on CodeKairo.
- Topic: Coding & Decoding
- Section: Logical Reasoning
- Difficulty: Easy
- Time target: 60 seconds
Question
If MADRAS is coded as NBESBT, how is BOMBAY coded?
Options
- CPNCBZ
- CPNCBY
- CQNCBZ
- CPMCBZ
Show the answer and the worked solution
Correct answer: A. CPNCBZ
Worked solution
- The shift is +1 on every letter.
- B→C, O→P, M→N, B→C, A→B, Y→Z.
- The code is CPNCBZ.
Answer: CPNCBZ.
The idea
Check the shift on at least three letters before applying it. Y wrapping to Z is fine; only Z would wrap round to A.
Shortcut. The options differ only at letters 2, 3 and 6: O+1 = P, M+1 = N and Y+1 = Z. CPNCBZ is the only option with all three.
Common trap. "CPNCBY" — copying Y unchanged because it sits at the end of the alphabet; Y + 1 is Z, and only Z itself would wrap round.