7/2 (seven halves) is the irreducible fraction resulting from the division of 7 by 2 ie the value of 3.5. Propertiesedit code Usechange code
7/2 is often used to designate a student (wireworm) wishing to join École Polytechnique between the third and fourth year of special mathematical preparation. Indeed, the École polytechnique is nicknamed the X and the integral of X between 3 and 4 is equal to 3.5 or 7/2. The term is also used for other engineering schools, where it refers to a successful completion of the competition after 4 years of preparation (2 repetitions of the 2 year of preparation).
Valéry Giscard d'Estaing, President of the French Republic from 1974 to 1981, is an example of 7/2 since he joined École Polytechnique at the end of his third year of preparation in special mathematics after the Occupation .
Most engineering schools have made it very difficult to enter 7/2, by various means: additional points for entry after 2 years of preparation, upper age limit, and in the case of the École Polytechnique, impossibility for 7/2 to access public jobs in the state (except active officers). As a result, the number of admissions in 7/2 has decreased considerably in the Schools since the Second World War. However, there are cases of entry in 7/2 or 9/2 in some schools of the joint competition Mines-Bridges-Telecom-SupAero-Ensta which does not impose an age limit. code
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