The Faculty of Exact and Natural Sciences, commonly and informally known as Exactas, is the natural science school of the University of Buenos Aires, the largest university in Argentina.

Núñez is a barrio or neighbourhood of Buenos Aires, Argentina. It is on the northern edge of the city on the banks of the Rio de la Plata. The barrio of Belgrano is to the southeast; Saavedra and Coghlan are to the west; and Vicente López, in Buenos Aires Province, is to the north.