Six persons are sitting in a circle. A is facing B. B is to the right of E and…

Concept:

In a circular seating arrangement where everyone faces the centre, moving from a person towards their immediate right corresponds to travelling anticlockwise around the ring (as seen from above), while moving towards their immediate left corresponds to travelling clockwise. With six evenly-spaced seats, two people described as “facing” each other sit diametrically opposite — exactly three seats apart along the ring.

Application:

1. “B is to the right of E” means B is the very next seat anticlockwise from E, giving the run E, B.

2. “B is to the left of C” means C is the very next seat anticlockwise from B, extending the run to E, B, C.

3. “C is to the left of D” extends the same run to E, B, C, D.

4. “F is to the right of A” gives a second short run: A, F.

5. Only two seats remain once E, B, C, D occupy four consecutive seats, so A and F must fill them in that same order; “A is facing B” (three seats apart) confirms this placement is the only one that closes the ring consistently — giving the anticlockwise order E, B, C, D, A, F (and back to E).

6. Now apply the two exchanges: D and F swap seats, and independently E and B swap seats. Updating each of the six seats gives the new anticlockwise order B, E, C, F, A, D (and back to B).

7. In this new order, the seat immediately before D going anticlockwise — i.e. D's left — is occupied by A.

Cross-check:

• All five original clues hold at once in the ring E, B, C, D, A, F: E's right is B, B's left is C, C's left is D, A's right is F, and A sits exactly three seats from B (opposite) — confirming this is the unique valid starting arrangement.

• Each of the two exchanges only swaps the occupants of two named seats and leaves every other seat's position in the ring untouched, so only the neighbours of the four people involved in a swap (B, E, D, F) actually change — which is exactly what was tracked above.

So, after both exchanges, the person sitting to the left of D is A.