railway RRB JE (CBT I + CBT II) Mock Test 2024 Industrial Engineering Operations Research PERT and CPM
With reference to the network shown in below fig. which statement is incorrect?
1
Event 7 can occur after event 4
2
Event 7 precedes event 6
3
Event 5 follows event 3
4
Event 3 and 4 occur after event 2