1.

P, Q, R, S, T, U and V are sitting in a row facing North. In order to determine, who is sitting exactly in the middle of the row, which of the following information is needed?(I) T and U are sitting at extreme ends of the row(II) S is third to the right of T(III) Q is four places to the left of R and P is two places to the left of V

A. I and II only are sufficient
B. I and III only are sufficient
C. I and either II or III are sufficient
D. I, II and III
Answer» B. I and III only are sufficient


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