Probability and Set Theory

What statement does the shaded region represent

• A or B
• Not A
• A and B
• Not B

A = {1, 3, 5, 7, 9}
B = {2, 3, 5, 7}
What is A ∩ B ?

• {3, 5, 7}
• {2, 3, 5, 7}
• {2, 3, 5, 7, 9}
• {1, 2, 3, 5, 7, 9}

What is the P(B)?

• 56/135
• 52/135
• 64/135
• 63/135

Which is the correct set notation for 
A U B?

• {12, 14, 15, 18, 21}
• {10, 11, 12, 14, 15, 18, 21}
• {10, 11, 13, 16, 17, 19, 20}
• {12, 14, 15, 18}

What statement does the shaded region represent?

• A or B
• A and not B
• Not A
• Not A or B

What statement does the shaded region represent?

• A or B
• A and B
• A
• B

What does this symbol ( ∪ ) represent in set theory?

• Union

• Intersection

• Disjointed

• Subset

What does this symbol ( ∩ ) represent in set theory?

• Union
• Intersection
• Disjointed
• Subset

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

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

How many senior boys play football but do not wrestle?

• 9
• 12
• 18
• 104