Chapter 13.1, Problem 1AYU

To determine

To fill: What is the term called if $A$ and $B$ consists of all elements in either $A$ or $B$ or both.

Answer to Problem 1AYU

Union.

Explanation of Solution

Given:

$A$ and $B$ are two sets.

In set theory, the union (denoted by $\cup$) of a collection of sets is the set of all elements in the collection. The union of $A$ and $B$ consist of all elements in either $A$ or $B$ or both.