If N is to be scheduled on Thursday, the earliest day on which R can be scheduled is 

The manager of a Cineplex is going to schedule six movies -- M, N, P, Q, R, and S --- during the course of one week. He will schedule one movie on each day from Monday through Saturday. The manager must schedule the movies according to the following conditions: 

. M must be scheduled earlier in the week than R. 

. P must be scheduled on Tuesday. 

. Q must be scheduled on the day immediately before or immediately after the day on which N is scheduled.