EVENT, UNION, & INTERSECTION

Event A: Rolling an even number on a six-sided die. Event B: Rolling a number greater than 3. What numbers are in A ∩ B?

• {1, 2, 3}

• {4, 6}

• {1, 3, 5}

• {2, 4, 6}

A bag contains red and blue marbles. Event A: Picking a red marble. Event B: Picking a blue marble. Are A and B mutually exclusive?

• Yes

• No

• Only if there are more red marbles.

• Only if there are more blue marbles.

In a class, 10 students like pizza, 8 like burgers, and 3 like both. How many students like pizza or burgers?

• 3

• 10

• 8

• 15

What does the symbol ∪ represent in set theory?

• Intersection

• Union

• Subset

• Complement

Which of the following symbols represents the intersection of two sets?

• ∩

• ∪

• ⊂

• ⊃