A, B, R, D, I, S, and T are sitting around a circular table facing away from the circle. A does not sit adjacent to I and T. B does not sit adjacent to A. R sits fourth to the left of A. D and B sit adjacent to each other. S sits third to the left of I. Who is the immediate neighbour of both T and A?

S

Answer: S

In this question place I to the third right of S. A cannot sit next to B and there should be two people between A and R, so, we can only place A to the immediate left of S, after placing A, we place R to the third right of A. Now place D and B, and remember B cannot be adjacent to A.