Six friends P, Q, R, S, T and U are sitting around a hexagonal table, each at…

Concept: In a circular seating arrangement where everyone faces the centre, moving to a person's left means moving in the clockwise direction as viewed from above (facing inward reverses the usual sense of left and right), and "second to the left" means two seats further in that direction. In any hexagonal (six-seat) arrangement, the seat directly opposite a given seat is exactly three positions away, since the six seats split into two sets of three, offset by half the table.

1. Fix U at seat 1 (any seat can serve as the starting reference). Since P is second to the left of U, count two seats clockwise from seat 1: P sits at seat 3.

2. Q is the neighbour of both R and S, so R, Q and S must occupy three consecutive seats with Q in the middle. Seats 1 and 3 are already taken by U and P, leaving seats 2, 4, 5 and 6 open; the only block of three consecutive seats among these is 4-5-6. So R, Q and S occupy seats 4, 5 and 6, with Q at the middle seat, 5.

3. T is second to the left of S, so T's seat number is S's seat number plus two (wrapping from 6 back to 1). If S sat at seat 4, T would land on seat 6 — already taken by the R-Q-S block, so that fails. If S sits at seat 6, T lands at seat 6+2=8, which wraps to seat 2 — the one seat still free. So S is at seat 6, R is at seat 4, and T is at seat 2.

4. The seat opposite seat 3 (P) is seat 3+3 = seat 6, which is S's seat.

Cross-check: Check every clue against the full layout — seat 1: U, seat 2: T, seat 3: P, seat 4: R, seat 5: Q, seat 6: S. P (seat 3) is second to the left of U (seat 1) — correct. Q (seat 5) sits between R (seat 4) and S (seat 6) — correct. T (seat 2) is second to the left of S (seat 6) — correct. Every clue holds, confirming S sits directly opposite P.

Therefore, S is sitting opposite P.