The puzzle
Harsh, Gauri, Farhan, Isha sit in a single row, all facing north. Seat 1 is the far-left end and seat 4 is the far-right end. Using the clues below, work out the order from left to right.
- Harsh sits at the far-right (extreme) end of the row.
- Gauri sits immediately to the left of Isha.
- Isha sits immediately to the left of Farhan.
Question: What is the seating order from far-left to far-right?
Reveal the answer
Answer: Gauri, Isha, Farhan, Harsh (left to right).
Seat 1GauriSeat 2IshaSeat 3FarhanSeat 4Harsh
- Start: 24 possible left-to-right orders of 4 people.
- Clue 1 — "Harsh sits at the far-right (extreme) end of the row." leaves 6 possibilities.
- Clue 2 — "Gauri sits immediately to the left of Isha." leaves 2 possibilities.
- Clue 3 — "Isha sits immediately to the left of Farhan." leaves 1 possibility.
- Exactly one order survives every clue — that is the answer.