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Find the union and intersection of $A=\{1,2,3,4,5\}$ and $B=\{2,7,5,10,100\}$ .

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Lesson Parent:

Problem:

Answer:

$A\cup B=\{1,2,3,4,5,7,10,100\}$ and $A\cap B=\{2,5\}$

Solution:

First, the union of $A$ and $B$ is the set

Therefore,

The intersection of $A$ and $B$ is the set

Since the only two elements that are in both

$A$ and

$B$ are

$2$ and

$5$ we have