20   Activity R on a CPM network has predecessors M and N, and has successor S. R has duration 5. N's late finish is 18, while M's is 20. S's late start is 14. Which of the following is definitely true?         Select one: a. The set of times cannot all be possible. b. S is a critical activity. c. R has no slack but is not critical d. N is a critical activity e. R is critical and has zero slack

Discuss the suggestion of preparing short-interval schedules 1 week prior to discussing them at a project meeting in order for all personnel to have ample time to review the information.

The extent of time by which an activity can be delayed beyond its earliest start time without extending the project is_____   Oa. Slack time   O b. Latest start time   Oc Optimistic time   Od. Expected start time

In the following table the activities with their precedence sequence and expected time (days) are listed for a project on which Carl Betterton's construction company is working: Activity Immediate Predecessor(s) A B с A A B B C D E, F Carl's team should be able to complete the project in F G H days. Time (days) 3 4664469

A simple CPM network has three activities, N, O, and P. N is an immediate predecessor of O and of P. O is an immediate predecessor of P. The activity durations are N = 9, 0 = 7, P = 5. O A. The critical path is N-O-P, duration 21. O B. The network has no critical path. O C. The critical path is O-P, duration 12. D. The critical path is N-P, duration 14. O E. The critical path is N-O-P, duration 7.