If DELHI is CDKGH — Coding & Decoding Aptitude Question
If DELHI is CDKGH: If DELHI is coded as CDKGH, how is MUMBAI coded? Answer and worked solution on CodeKairo.
- Topic: Coding & Decoding
- Section: Logical Reasoning
- Difficulty: Easy
- Time target: 60 seconds
Question
If DELHI is coded as CDKGH, how is MUMBAI coded?
Options
- LTLAZH
- LTLAZI
- LULAZH
- NVNCBJ
Show the answer and the worked solution
Correct answer: A. LTLAZH
Worked solution
- The shift is −1.
- M→L, U→T, M→L, B→A, A→Z, I→H.
- The code is LTLAZH.
Answer: LTLAZH.
The idea
A wraps round to Z when shifting back by one. Handling that wrap correctly is what separates the right option from the others.
Shortcut. U−1 = T, A−1 = Z and I−1 = H separate the options: LTLAZH is the only one with T, Z and H in place, and NVNCBJ, the +1 code, goes first.
Common trap. "NVNCBJ" — applying the shift in the wrong direction; DELHI → CDKGH moves each letter back one place, so M becomes L, not N.