Operations Research (OR) is an interdisciplinary branch of applied mathematics or formal science which uses methods like mathematical modeling, statistics, and algorithms to arrive at optimal or good decisions in complex problems which are concerned with optimizing the maxima (profit, faster assembly line, greater crop yield, higher bandwidth, etc) or minima (cost loss, lowering of risk, etc) of some objective function. The ultimate goal behind using operations research is to elicit a best possible solution to a problem mathematically, which improves or optimizes the performance of the system eliminating or at least reducing the bottlenecks therein. 
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