**Problem : ** If
*X* = { -1, 2, 9, 3, 0}
and
*Y* = {2, 0, 1, 3, -9}
, what is
*X*∪*Y*
?

**Problem : ** If
*X* = { -1, 2, 9, 3, 0}
and
*Y* = {2, 0, 1, 3, -9}
, what is
*X*∩*Y*
?

**Problem : ** Draw a Venn diagram for
{1, 2, 3, 4, 8, 9}∪{1, 3, 4, 6}
.

**Problem : ** If
*X*
has
4
members,
*Y*
has
6
members, and
*X*∩*Y*
has
2
members, how many members does
*X*∪*Y*
have?

**Problem : ** If
*A*
has
5
members,
*B*
has
3
members, and
*A*∪*B*
has
6
members, how many members does
*A*∩*B*
have?

**Problem : ** Draw a Venn diagram for
{ -3, -2, -1, 0}∩{0, 1, 2, 3}

**Problem : ** What is
{2, 3, 4, 5}∩{2, 3, 4, 5}
?