High Quality Content by WIKIPEDIA articles! A problem is an obstacle which hinders the achievement of a particular goal, objective or purpose. It refers to a situation, condition, or issue that is yet unresolved. In a broad sense, a problem exists when an individual becomes aware of a significant difference between what actually is and what is desired between one or more individual. Every theoretical problem asks for an answer or solution. Trying to find a solution to a problem is known as problem solving. That is, a problem is a gap between an actual and desired situation. The time it takes to solve a problem is a way of measuring complexity. Many problems have no discovered solution and are therefore classified as an open problem. From the mid 20th century, the field of theoretical computer science has explored the use of computers to solve problems.

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