Question

P, Q, R, S, T, U and V are sitting around a circular table facing the centre (but not necessarily in the same order). P is sitting to the immediate right of R and immediate left of Q. S is sitting to the immediate right of U and immediate left of T. T is sitting to to the immediate left of R. Who is immediate neighbour of both Q and U ?

• A. P
• B. V
• C. S
• D. T

Answer 1

Answer:

B. V

Since all are facing the centre, “right” means anticlockwise and “left” means clockwise.

Fix R, P, Q, T

• P is immediate right of R → P is anticlockwise of R

• P is immediate left of Q → Q is anticlockwise of P
  So sequence: R → P → Q (anticlockwise)

• T is immediate left of R → T is clockwise of R

So now we have:
T – R – P – Q (clockwise direction)

Place S and U

• S is immediate right of U (anticlockwise)

• S is immediate left of T (clockwise)

So around T:
S is just before T (clockwise) and U is just before S

Thus:
U → S → T → R → P → Q

Remaining person V fills last spot

Final circular arrangement:
U – S – T – R – P – Q – V

Find common neighbour of Q and U

Neighbours:

• Q’s neighbours: P and V

• U’s neighbours: V and S

Common neighbour = V

Final Answer:

V