Industrial Engineering and Production Management
When slack of an activity is negative

It represents that a programme falls behind schedule and additional resources are required to complete the project in time
The activity is critical and any delay in its performance will delay the completion of whole project
All of these
It represents a situation where extra resources are available and the completion of project is not delayed

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Industrial Engineering and Production Management
Which of the following statement is correct about the network diagram?

All of the these
The head of the arrow represents the end of an activity.
The events are represented graphically by circles or nodes at the beginning and the end of activity by arrows.
The tail end of the arrow represents the start of an activity.

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