Decoding a +2 shift — Coding & Decoding Aptitude Question
Decoding a +2 shift: In a code where LIGHT is written as NKIJV, what does HQQF stand for? Answer and worked solution on CodeKairo.
- Topic: Coding & Decoding
- Section: Logical Reasoning
- Difficulty: Medium
- Time target: 75 seconds
Question
In a code where LIGHT is written as NKIJV, what does HQQF stand for?
Options
- FOOD
- FOOT
- GOOD
- HOOD
Show the answer and the worked solution
Correct answer: A. FOOD
Worked solution
- The shift is +2, so decoding subtracts 2.
- H→F, Q→O, Q→O, F→D.
- The word is FOOD.
Answer: FOOD.
The idea
Establish the shift from the example, then reverse it. Reading the decoded letters as a real word is the final confirmation.
Shortcut. Decode the two letters that separate the options: H − 2 = F and F − 2 = D. Only FOOD starts with F and ends with D.
Common trap. "GOOD" — taking only one step back from H, to G, a slip made easier because GOOD is such a common word; the shift is two, so H becomes F.