Discussion
In which of the following groups is the first person sitting between the second and the third persons?
Answer: E
Correct answer: None of these
Facing the centre, each person’s left is the next seat clockwise and their right the next seat anticlockwise. Fix P; V sits two to P’s left and W two beyond V. Of the two ways to place Q with T three seats to Q’s right, only one keeps T off V’s shoulder, and R and S then fit in one way only. Clockwise the circle reads P → Q → V → S → W → T → R.
Taking each group in turn: R sits between T and P, not between P and Q; T between W and R; Q between P and V; and Q again between P and V, not between V and S. No group has its first member between the other two, so the answer is none of these.
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