Question
Discussion. If $A$ and $B$ are finite sets, could $A \cup B$ be infinite? Explain.
Step 1
A finite set is a set that has a fixed number of elements. In other words, we can count the number of elements in the set. For example, the set $A = \{1, 2, 3\}$ is a finite set because it has exactly 3 elements. Show more…
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