Question

The symbol is an element of is used to indicate that an object
▼
of a set.

Answer 1

The symbol "∈" is used to indicate that an object is an element of a set. For example, if you have a set \( A = \{1, 2, 3\} \) and you want to indicate that the number 2 is an element of this set, you would write \( 2 \in A \).