Industrial Engineering and Production Management
Which of the following conditions are necessary for applying linear programming?

These must be a well defined objective function.
The resources must be in limited supply.
All of these
The decision variables should be interrelated and nonnegative.

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Industrial Engineering and Production Management
The reasons which are basically responsible for the formation of a queue should be that

All of these
Output rate is linearly proportional to input
The average service rate Hess than the average arrival rate
Output rate is constant and the input varies in a random manner

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