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.
- Hina sits opposite Sahil.
- Uma sits second from one end.
- Wafa sits at an extreme end.
- The person opposite Xavier is not at an extreme end.
Question: Who sits directly opposite Sahil?
Table Method: Row-1 (top, South-facing) and Row-2 (bottom, North-facing) are parallel.
Fixed: Hina opposite Sahil. Use the end constraints on Wafa and the non-end constraint for the person opposite Xavier.
One valid arrangement:
Row-1 (South, L→R): Hina, Uma, Bhavya, Mira
Row-2 (North, L→R): Sahil, Zoya, Wafa, Xavier
Verification:
- Hina sits opposite Sahil.
- Uma sits second from one end.
- Wafa sits at an extreme end.
- The person opposite Xavier is not at an extreme end.
Fixed: Hina opposite Sahil. Use the end constraints on Wafa and the non-end constraint for the person opposite Xavier.
One valid arrangement:
Row-1 (South, L→R): Hina, Uma, Bhavya, Mira
Row-2 (North, L→R): Sahil, Zoya, Wafa, Xavier
Verification:
- Hina sits opposite Sahil.
- Uma sits second from one end.
- Wafa sits at an extreme end.
- The person opposite Xavier is not at an extreme end.