# Lectures - 2.1 Probabilities Events and Equally Likely Outcomes

Quiz 2.1 #1

Consider the experiment of flipping a coin twice.

How many elements are in the event of “flipping at least one head?”

(Hint: draw a tree diagram [1.4] and determine the sample space first, then determine which elements “qualify”)

- A. 2
- B. 3
- C. 4

Quiz 2.1 #2

Consider the experiment of rolling two dice.

What is the number of elements in the event “Difference between rolls is at least 3?”

- A. 12
- B. 14
- C. 16

Quiz 2.1 #3

Let’s consider an experiment of drawing a card from a deck of cards.

What’s the probability of drawing an Ace?

- A. 1/12
- B. 1/13
- C. 1/52

Deck of Cards