Who lives on the top floor — Aptitude Question
Who lives on the top floor: Four people live on four floors of a building. P lives above Q, R lives below Q, and S… Answer and worked solution on CodeKairo.
- Topic: Seating & Puzzles
- Section: Logical Reasoning
- Difficulty: Easy
- Time target: 60 seconds
Question
Four people live on four floors of a building. P lives above Q, R lives below Q, and S lives above P. Who lives on the topmost floor?
Options
- P
- Q
- R
- S
Show the answer and the worked solution
Correct answer: D. S
Worked solution
- R is below Q, Q is below P, and P is below S.
- The order upwards is R, Q, P, S.
- The topmost is S.
Answer: S.
The idea
Floor puzzles are ordering puzzles drawn vertically. Write the chain from the ground up and read off the top.
Shortcut. The top floor belongs to whoever is never said to live below anyone: S appears only as 'above P'.
Common trap. "P" — taken from the first clue, 'P lives above Q', before the last clue puts S above P.