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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? T and U are sitting at extreme ends of the row S is third to the right of T Q is four places to the left of R and P is tw... | Watch the step-by-step video solution for this NIMCET PYQ.