The following are the starting and ending times of activities A, B, C, D, E, F, G and H respectively in chronological order: as bs cs ae ds ce es fs be de gs ee fe hs ge he. Here, xs denotes the starting time and xe denotes the ending time of activity X. We need to schedule the activities in a set of rooms available to us. An activity can be scheduled in a room only if the room is reserved for the activity for its entire duration. What is the minimum number of rooms required?

The following are the starting and ending times of activities A, B, C,

1.	The following are the starting and ending times of activities A, B, C, D, E, F, G and H respectively in chronological order: as bs cs ae ds ce es fs be de gs ee fe hs ge he. Here, xs denotes the starting time and xe denotes the ending time of activity X. We need to schedule the activities in a set of rooms available to us. An activity can be scheduled in a room only if the room is reserved for the activity for its entire duration. What is the minimum number of rooms required?
A.	3
B.	4
C.	5
D.	6
Answer» C. 5

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