Operations of Sets

The Union of two sets

All numbers that appear in two sets.

The number 4 is

Not D n (E n F)

D n F is

Not {4, 6}

A n (B n C)

Null, or empty set.

B n C

Null, or empty set.

Intersection

Numbers that are the same and appear in both sets.

A= {1, 2, 3, 4, 5} B= {2, 4, 6} C= {1, 3, 5}

Set #1

Operations in the algebra sets are

Union and Intersection

What is the symbol for intersection?

n

A u B

{1, 2, 3, 4, 5, 6}

B u C

{1, 2, 3, 4, 5, 6}

A u C

{1, 2, 3, 4, 5,}

A u (B n C)

{1, 2, 3, 4, 5}

A n C

{1, 2, 3}

A n C

{1, 3, 5}

E u F is

{2, 4, 6, 8}

A n B

{2, 4}

What is the symbol for union?

U