Question 1
Eight people sit in two rows of four each. Row-1 faces south and Row-2 faces north. Opposite seats align by index.
- Omar sits opposite Eshan.
- Ira sits second from one end.
- Kaira sits at an extreme end.
- The person opposite Diya is not at an extreme end.
Question: Who sits directly opposite Nihal?
Table Method: Row-1 (top, South-facing) and Row-2 (bottom, North-facing) are parallel.
Fixed: Omar opposite Eshan. Use the end constraints on Kaira and the non-end constraint for the person opposite Diya.
One valid arrangement:
Row-1 (South, L→R): Omar, Ira, Nihal, Bhavya
Row-2 (North, L→R): Eshan, Qadir, Kaira, Diya
Verification:
- Omar sits opposite Eshan.
- Ira sits second from one end.
- Kaira sits at an extreme end.
- The person opposite Diya is not at an extreme end.
Fixed: Omar opposite Eshan. Use the end constraints on Kaira and the non-end constraint for the person opposite Diya.
One valid arrangement:
Row-1 (South, L→R): Omar, Ira, Nihal, Bhavya
Row-2 (North, L→R): Eshan, Qadir, Kaira, Diya
Verification:
- Omar sits opposite Eshan.
- Ira sits second from one end.
- Kaira sits at an extreme end.
- The person opposite Diya is not at an extreme end.