Seven friends P, Q, R, S, T, U and V sit around a circle facing the centre. V is second to the left of S, and is the neighbour of T and U. S is not the neighbour of R and T. P is the neighbour of Q and R. What will be the position of R?
Seven friends P, Q, R, S, T, U and V sit around a circle facing the centre. V is second to the left of S, and is the neighbour of T and U. S is not the neighbour of R and T. P is the neighbour of Q and R. What will be the position of R?
Working through the clues step by step: place S first, V sits second to S's left, and V's two neighbours must be T and U. Since S cannot have T as a neighbour, U ends up next to S and T takes the other seat next to V. Of the remaining three seats for P, Q and R, P must sit between Q and R since P is stated to be their common neighbour, and since R cannot sit next to S, R takes the seat that leaves it two places away from Q. Checking R's position against each option shows it does not match 'second to the left of Q', 'third to the right of U', or 'immediate left of P' - so the correct answer is 'None of these'.
Re-check your working by substituting the answer back into the original question.