Answer: An example of an infinite set is the set of natural numbers.
Step-by-step explanation: We are given to write an example of an infinite set.
We know that
A set that contains an infinite number of elements is called an infinite set.
For example, the set of natural numbers.
The set of natural numbers is defined and denoted by
[tex]\mathbb{N}=\{1,~2,~3,~4,~5,~.~.~.\}.[/tex]
Thus, an example of an infinite set is the set of natural numbers.