Construction Planning and Management
If the optimistic time, most likely time and pessimistic time for activity A are 4, 6 and 8 respectively and for activity B are 5, 5.5 and 9 respectively, then

expected time of activity A is greater than the expected time of activity B
None of these
expected time of activity B is greater than the expected time of activity A
expected time of both activities A and B are same

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Construction Planning and Management
Whenever an activity has zero total float, then

Free float and independent float both must be zero
Free float of the activity must be zero but independent float need not be zero
Independent float must be zero but free float need not be zero
Free float and independent float both need not be zero

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