General Studies · Seating Arrangement

Six friends Mahesh, Nisha, Oliver, Prakash, Kasim, and Ratish are sitting around a hexagonal table facing the center in a coffee shop. i) Nisha is sitting to the immediate right of Mahesh. ii) Oliver is not sitting opposite to Nisha. iii) Ratish and Prakash are sitting opposite to each other. iv) Mahesh is not a neighbor of Prakash. How many people are sitting between Prakash and Kasim when counting from the right of Kasim?