Discussion
Starting from P’s position, if all the eight are arranged in alphabetical order in clockwise direction, the seating position of how many members (excluding P) would not change?
Answer: B
Correct answer: One
Facing the centre, each person’s left is the next seat clockwise and their right the next seat anticlockwise. Fix P; W is three to P’s left and Q three to P’s right. Trying each seat for T with S two to T’s right, only one choice keeps T away from Q, and of the two ways of then placing R and V, only one keeps U away from both T and W. Clockwise the table reads P → T → R → W → V → Q → U → S.
Keeping P where he is and running the alphabet clockwise puts Q, R, S, T, U, V, W in the seats after him. Comparing with the original table, only R lands on the seat he already occupies - two clockwise of P in both arrangements - so exactly one member keeps his place.
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