Six friends A, B, C, D, E and F sit around a circular table facing the centre. A sits opposite D. B sits to the immediate right of A. C sits opposite B. E does not sit next to D. Who sits to the immediate left of A?

The correct answer is B. E

Fix A's seat. D is directly opposite A, and B is on A's right. C is opposite B, so C sits next to D on the side away from B. The two seats left are next to A (on A's left) and next to D; E cannot sit next to D, so E sits to the immediate left of A and F sits between D and B.