Six Lectures P, Q, R, S, T and U are to be delivered on consecutive Sundays. The schedule of the lectures is to be in accordance with the following conditions:
(a) P must be delivered a week before T.
(b) R must not be delivered immediately after the first lecture.
(c) Q must be delivered on the Sunday following the Sunday on which U is delivered.
(d) S must be delivered on fifth Sunday and should not be immediately preceded by Q.
(e) T must not be delivered in the last.
Which of the following Lectures is delivered first?
