What are the two ways of representing a set?

A set can be represented in two primary ways: roster (or tabular) form and set-builder form. In roster form, the set is listed explicitly with its elements enclosed in curly braces, such as ( A = {1, 2, 3} ). In set-builder form, the set is defined by a property that its members satisfy, expressed as ( B = {x \mid x \text{ is an even number}} ). Both methods effectively convey the same information about the set.