Set Notation

What does this symbol ( ∪ ) represent?

• Subset

• Intersection

• Union

• Null

What does this symbol ( ∩ ) represent?

• Intersection

• Union

• Subset

• Null

If A = {1, 3, 5, 7, 9} and B = {2, 3, 5, 7}, what is A ∩ B?

• {2, 3, 5, 7}

• {3, 5, 7}

• {2, 3, 5, 7, 9}

• {1, 2, 3, 5, 7, 9}

What type of set is denoted as either { } or ∅?

• Universal Set
• Empty (or Null) Set
• Disjointed Set
• Complement of a Set

Find n(A) when

A = {14, 16, 18, 20, 22, 24}

• 6

• 14

• 24

• 2

The Universal Set = { -4, 3, -2, -1, 0, 1, 2, 3 ,4} and A = {0}.
What is the complement of A?

• {-4, -3, -2, -1, 0, 1, 2, 3}
• {-3, -2, -1, 1, 2, 3}
• {-4, -3, -2, -1, 1, 2, 3, 4}
• {-4, -3, -2, -1, 1, 2, 3}

What is the correct symbol for subset?

• Ø
  

List the elements of the vowels in the word "circumference".

• {e, e, e, i, u}

• {c, m, f, r, n}

• { }

• {i, u, e}

Given: J = { p, a, n, d, e, m, i, c}

K = { c, a, m, e }

L = { }

Find: J ∪ K

• J ∪ K = { p, a, n, d, e, m, i, c }

• J ∪ K = { c, a, m, e}

• J ∪ K = { p, n, d, i }

• J ∪ K = { }

If every element in set A is also in set B, then...

• A is a subset of B
• B is a subset of A
• A = B
• A and B are disjoint