Five friends Harish, Jignesh, Mahesh, Tarun, and Umang are sitting on a bench facing North, but not necessarily in the same order. Harish sits to the immediate left of Jignesh. Mahesh sits to the immediate right of Umang. Jignesh and Tarun sit adjacent to each other. Umang does not sit on the leftmost end. Who sits on the leftmost end?

Seven people, P, Q, R, S, T, U and V, are sitting in a straight line, facing north. T is sitting third to the right of V. Only three people are sitting between S and R. R is sitting to the immediate left of T. S is sitting at the extreme left corner. P is sitting second to the left of U. Who is sitting at the extreme right corner?

Seven people, A, B, C, D, E, F and G, are sitting in a row, facing north. No one sits to the left of C. Only four people sit between C and A. Only three people sit to the right of G. E sits to the immediate left of B. F is not an immediate neighbour of G. How many people sit to the right of D?