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

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Construction Planning and Management
Latest start of an activity is always

less than latest event time of preceding node
greater than or equal to latest event time of preceding node
less than or equal to latest event time of preceding node
equal to latest event time of preceding node

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