Question
How many persons sit between V and R when counted from
the right of R? Study the following information carefully and answer the below questions Eight persons- Q, R, S, T, U, V, W and X are sitting around the square table facing the centre. Four of them sit in the corner and four of them sit in the middle of the sides of the table, but not necessarily in the same order. T sits third to the left of U. One person sits between U and Q who sits at the corner of the table. S and X sit opposite to each other. S is not an immediate neighbour of Q.R sits second to the left of S.W sits second to the right of V.Solution
T sits third to the left of U. One person sits between U and Q who sits at the corner of the table. From the above condition, there are two possibilities.
S and X sit opposite to each other. S is not an immediate neighbour of Q. R sits second to the left of S. From the above condition, case2 gets eliminated.
Again we have, W sits second to the right of V. From the above condition, case1 shows the final arrangement. 
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