# Operations Research

• ## What is an Event?

Event : An event represents a point in time that signifies the completion of some activities and the beginning of the new ones. E.g. Wall...

• ## Numericals on Normal Distribution

(Normal Distribution)   Find the following areas : 1.         A (0 < z < 1.53)   2.         A (- 0.75 < z < 0)  ...

• ## What is ‘Hungarian method’ of solving assignment problem?

Whenever the pay off matrix of any assignment problem is not a square matrix i.e. no. of rows not equal to number of columns the...

• ## Numericals on Travelling Salesman Assignment Model

(Travelling Salesman) 1.         A salesman has to visit five different cities. The distance (in km) between the cities is given below. Find the sequence of...

• ## What is PERT Analysis?

BASIC TIME ANALYSIS (PERT ANALYSIS) In many situations, activity times can be estimated accurately. For example, in projects such as construction or maintenance, manager may...

• ## Terminology of Linear Programming Problems

TERMINOLOGY OF LP –   Decision Variables: The unknowns to be determined. Constraints: Mathematical equations of the limitations imposed by the situation or problem characteristics....

• ## Numericals on Formulation Method of Linear Programming

(Formulation) 1.         Raja Furniture factory produces inexpensive tables and chairs. Production process on both are similar in the sense that both require a certain number...

• ## Find IFS by VAM and Optimal solution by MODI method

Following table shows supply and demand (In thousand units). Find IFS by VAM and Optimal solution by MODI method.                                                                                               {Rs. 799,000)     W1 W2...

• ## Explain unbalanced assignment problem

If number of jobs is not equal to the number of operators then the assignment problem is known as unbalanced assignment problem. In other words...

• ## Terminology of LPP (Simplex Method)

TERMINOLOGY –   1. Standard Form:       A LPP in which all constraints are written in equalities.   2. Slack Variable:        A variable added to the...

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