👉 In mathematics, the cardinality of a set is defined as the number of elements in it. It is denoted by "n" and represents the size or quantity of the set. The cardinality of a set can be positive, negative, or zero. For example, consider the set {1, 2, 3} in mathematics. In this case, its cardinality (or number of elements) would be 3 because it contains three distinct elements: 1, 2
