Eight people 1, 2, 3, 4, 5, 6, 7 and 8 are sitting around a square table facing away from the centre. Some sit at the corners while others sit at the exact centre of the sides. 5 sits third to the right of 7. 5 sits at one of the corners. 2 sits second to the left of 6. 6 does not sit at any corner and is not an immediate neighbour of 5. 8 is an immediate neighbour of 1. 8 does not sit at any of the middle of the sides. Only three people sit between 8 and 3. Who sits to the immediate right of 6?

Seven people, M, N, O, P, X, Y, and Z are sitting in a row, facing north. No one sits to the left of X. Only four people sit between X and O. Only three people sit to the right of M. Z sits to the immediate left of N. P is not an immediate neighbor of M. Who sits at the rightmost end of the line?

Five students are sitting in a row facing North. Akbar is to the left of the person sitting in the middle, but to the right of Sekar. Prakash is to the right of Deva, and Ram is to the right of Prakash. Ram is second from the person sitting in the middle. Who is the person sitting in the middle?