Artificial intelligence is very important today. With the artificial intelligence finding a place in our lives, there are advances in the legal system, education system, health system and other areas. With the fuzzy logic method, which is one of the sub-branches of artificial intelligence, many mathematical expressions can be easily solved. Fuzzy logic is a logic system that expresses ambiguity and intermediate values, along with the effect of advanced studies of classical binary logic. Decoupled logic is a logic system that expresses ambiguity and intermediate values. This logic system is especially suited to the human way of thinking and modeling ambiguities in natural language. The most important benefit of fuzzy logic is that it can model situations that do not have precise and strict boundaries in a more human-specific and flexible way. In this way, it is able to carry the issues we face in daily life and certain issues further. Artificial intelligence can be briefly thought of as computers being like the human brain. With this study, other studies in the literature conducted using the fuzzy logic principle were investigated. The studies have been compiled together and the conclusions obtained have been shared as a result in order to guide the programs and projects that can create an easy-to-use area for university students.