# 2.4 Operations and Venn Diagrams with Three Sets by pptfiles

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```									2.4 Operations and Venn
Diagrams with Three Sets
Nothing new here. If you can add two numbers, you can add three. One step at a time.
U = {1, 2, 3, 4, 5, 6, 7, 8, 9}
A = {1, 2, 3, 4, 5}
B = {1, 3, 6, 9}
C = {2, 4, 6, 8}

Find:

Work inside the parenthesis first.
U = {1, 2, 3, 4, 5, 6, 7, 8, 9}
A = {1, 2, 3, 4, 5}
B = {1, 3, 6, 9}
C = {2, 4, 6, 8}

Find:

Work inside the parenthesis first.
U = {1, 2, 3, 4, 5, 6, 7, 8, 9}
A = {1, 2, 3, 4, 5}
B = {1, 3, 6, 9}
C = {2, 4, 6, 8}

Find:

Work inside the parenthesis first.
A Venn diagram with three sets
Which regions are in set A?
1, 2, 4, 5
A               B
1       2           3       Which regions are in set B?
5                   2, 3, 5, 6
4       6
Which regions are in set C?
7                   4, 5, 6, 7
C
8   Which regions are in        ?
4, 5
Which regions are in              ?
1, 2, 4, 5, 6
Which regions are in              ?
2, 4, 5
Which regions are in          ?
3, 8
A Venn diagram with three sets
Which regions are in   ?
1, 2, 3, 6, 7, 8
A               B
1       2           3
Which regions are in   ?
5
4       6               1, 2, 3, 6, 7, 8
7
C
8
Show that
A               B
1       2           3
5
4       6
7
C
8

```
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