# Set Union/Examples/3 Arbitrarily Chosen Sets

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## Example of Set Union

Let:

 $\displaystyle A_1$ $=$ $\displaystyle \set {1, 2, 3, 4}$ $\displaystyle A_2$ $=$ $\displaystyle \set {1, 2, 5}$ $\displaystyle A_3$ $=$ $\displaystyle \set {2, 4, 6, 8, 12}$

Then:

$A_1 \cup A_2 \cup A_3 = \set {1, 2, 3, 4, 5, 6, 8, 12}$