Question
P, Q, R, S and T are five friends standing in a straight
line facing towards north. P is on the immediate right of Q. T is between P and S. If R and Q are at the ends, which of the following is second to the left of R?Solution
(i) If R and Q are at the ends of the row, then there will be two cases: Case 1: Case 2:
(ii) P is on the immediate right of Q. T is between P and S. Now here Case 1 will not follow. Hence, Case 2 will be the final arrangement:

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