Types of Deductive Arguments

There are 3 types of deductive argument: the arguments by elimination, arguments based on mathematics, and arguments by definition.  The argument by elimination is when you rule out different possibilities until only one possibility remains. This type of argument is used everyday.   Physicians are trained in this type of deductive logic especially when they are diagnosing an illness. When they diagnosis an illness, a physician starts by doing a physical examination and often by ordering tests. The arguments based on mathematics are when the conclusion depends on mathematical or geometrical calculations. For example, when you say that your dormitory is rectangular in shape. One side measures 11 feet and the side adjacent to it measures 14 feet in length.  Some arguments based on mathematics may be quite complex and require mathematical expertise. An argument by definition is when the conclusion is true because it is based on a key term or essential attribute n a definition.