A problem's an issue or obstacle which makes it difficult to achieve a desired goal, objective or purpose (of which no examples currently exist). It refers to a situation, condition, or issue that's yet unresolved. In a broad sense, a problem exists when an individual becomes aware of a significant difference between what actually's and what's desired. Etymology The word problem derives from Greek (próblema), something that's been presented. Problem Solving Every theoretical problem asks… (More on Problem)