Five floors — Seating & Puzzles Aptitude Question
Five floors: Five people live on five floors. A lives above B, C lives below B, D lives above A, and E lives… Answer and worked solution on CodeKairo.
- Topic: Seating & Puzzles
- Section: Logical Reasoning
- Difficulty: Hard
- Time target: 105 seconds
Question
Five people live on five floors. A lives above B, C lives below B, D lives above A, and E lives between A and D. Who lives on the second floor from the bottom?
Options
- A
- B
- C
- E
Show the answer and the worked solution
Correct answer: B. B
Worked solution
- C is below B, and B is below A, giving C, B, A upwards.
- D is above A, and E lies between A and D, so the order continues A, E, D.
- The full order upwards is C, B, A, E, D.
- The second from the bottom is B.
Answer: B.
The idea
Build the vertical chain from the bottom up, inserting each person as their clue allows. Count from the end the question names.
Shortcut. Only C is below B — A is above B, and D and E are above A — so B has exactly one floor under it: second from the bottom.
Common trap. "E" — counting from the top: in the order C, B, A, E, D upwards, E is second from the top, not the bottom.