A simple reversal — Coding & Decoding Aptitude Question
A simple reversal: If WORLD is coded as DLROW, how is INDIA coded? Answer and worked solution on CodeKairo.
- Topic: Coding & Decoding
- Section: Logical Reasoning
- Difficulty: Easy
- Time target: 40 seconds
Question
If WORLD is coded as DLROW, how is INDIA coded?
Options
- AIDNI
- AIDIN
- AINDI
- IDNIA
Show the answer and the worked solution
Correct answer: A. AIDNI
Worked solution
- The code simply reverses the word.
- INDIA reversed is AIDNI.
Answer: AIDNI.
The idea
Always test a plain reversal before anything more elaborate. It is the simplest non-shift code and appears often.
Shortcut. A reversal ends with the original's first letter and puts the original's second letter fourth, so the code must end in N, I. Only AIDNI ends that way.
Common trap. "AIDIN" — reversing correctly until the last two letters and then writing them in INDIA's original order (I, N) instead of reversed (N, I).