A group of friends are sitting in an arrangement, one at each corner of a regular octagon, all facing the centre. Mahima is sitting diagonally opposite Rama, who is on Sushma's right. Ravi is next to Sushma and opposite Girdhar, who is on Chandra's left. Savitri is not on Mahima's right but opposite Shalini. Who is sitting on Shalini's right?

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?