Which symbol is used to represent the intersection of sets?

The symbol that represents the intersection of sets is indeed the one denoted as ∩. In set theory, the intersection of two sets refers to the elements that are common to both sets. For example, if you have two sets A and B, the intersection A ∩ B will include all elements that are found in both set A and set B.

To illustrate, if set A contains the elements {1, 2, 3} and set B contains {2, 3, 4}, the intersection A ∩ B would yield {2, 3}, which are the elements present in both sets. This concept is fundamental in finite mathematics and is widely used in various applications, including probability, statistics, and logic.

The other symbols mentioned represent different operations or concepts in set theory. The symbol for union (∪) is used to represent the combination of all elements from the involved sets without duplication. The subset symbol (⊆) indicates that all elements of one set are contained within another set. Lastly, the empty set symbol (∅) represents a set that has no elements. Understanding these distinct symbols and their meanings is important for effectively working with sets in mathematics.