Industrial Engineering and Production Management
A feasible solution to the linear programming problem should

Optimise the objective function
Satisfy the non-negativity restrictions
Satisfy the problem constraints and non-negativity restrictions
Satisfy the problem constraints

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Industrial Engineering and Production Management
Critical Path Net Work helps an engineer

All of these
To be cautious for avoiding any delay in the critical activities to avoid delay of the whole project
To divert the resources from noncritical advanced activities to critical activities
To concentrate his attention on critical activities

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Industrial Engineering and Production Management
Pessimistic time is

The minimum time in which an activity can possibly be accomplished
The maximum time which an activity might require
The most probable time considering all conditions
The average time required for a job

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