Eight friends — P, Q, R, S, T, U, V and W — sit in a straight row, all facing north. P sits fourth from the left end. Only two people sit to the right of V. Q sits third to the left of P. T sits second to the right of Q. R is an immediate neighbour of P. S sits at an extreme end and to the right of V. U is not an immediate neighbour of V. If all eight are re-seated in alphabetical order from left to right, how many of them remain in the same position as before?

Question

Accepted Answer

None. Original row: Q, U, T, P, R, V, W, S. Alphabetical row: P, Q, R, S, T, U, V, W. Comparing position by position (Q≠P, U≠Q, T≠R, P≠S, R≠T, V≠U, W≠V, S≠W), no one keeps the same seat.

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