General Studies · Ranking and Ordering

Five students, P, Q, R, S, and T, have to work on a group assignment sequentially. Each passes the assignment to the next person after finishing. The person who completes the work first passes it to R. The one who works last on the assignment received it from P. T was neither the first nor the last to work. There were exactly two persons who worked between Q and P. Who worked last on the assignment?