Definitions [2]
Definition: Set
A set is a well-defined collection of distinct objects or elements.
- Example 1: A collection of books.
- Example 2: A group of students
Definition: Cardinality
Cardinality refers to the number of distinct elements in a set.
It is denoted by n(A)
- The cardinal number of the empty set is 0.
- The cardinal number of an infinite set is not defined
