N, O, Q, R, S and U are standing in straight line facing north. Who among the following is between R and U?
I. U stand second to the right of R. U is an immediate neighbour of O and Q. S is second to the right of Q.
II. There are three persons between O and S. O is not at the extreme ends of the row but is second to the left of Q.
From I, O stands between R and U. Hence statement I alone is sufficient to answer the question. From II, There is no information about R and U. So statement II alone is not sufficient to answer the question.
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