Question 1
4 people (Matthew, William, Neha, Alex) live in a building with floors 1 to 4. They recently moved between floors.
Based on these clues:
• Initially, Matthew lived on floor 3
• Initially, William lived on floor 1
• Initially, Neha lived on floor 2
• Initially, Alex lived on floor 4
• Matthew did not move
• William moved 1 floor up
• Neha moved 1 floor down
• Alex did not move
• Matthew lives immediately above William
• William lives on an even-numbered floor
• Alex lives immediately above Matthew
After the moves, on which floor does Neha live?
The unique arrangement (floor: person) is: {1: 'Neha', 2: 'William', 3: 'Matthew', 4: 'Alex'}. Initial state: {'William': 1, 'Neha': 2, 'Matthew': 3, 'Alex': 4}.