Intro to Probability

A standard number cube is rolled. What is the probability it lands on a number less than 3?

• 1/2

• 1/6

• 1/3

• 1/4

A standard number cube is rolled. What is the probability it lands on a number greater than 2?

• 2/3

• 1/3

• 3/4

• 5/6

Probability can be written as...

• A percent

• A decimal

• A fraction

• All of the above

A set of all possible outcomes is known as ____.

• The sample space

• A list

• An event

• A complement

Probability is….

• The chance that some event will occur

• A game that involves betting

• A guarantee

What does the complement of an event mean?

• A nice event

• The opposite

• The same event

The probability that Pedro will hit a hole in one at the golf course is 40%. If Pedro goes golfing 40 times in a year, how many times can he expect to hit a hole in one?

• 24

• 18

• 16

• 20

The letters from the word GEOMETRY are placed in a bowl. What is the probability of choosing a letter other than “E”?

• 1/8

• 1/3

• 1/4

• 3/4

P(not A)

• 3/4

• 1/2

• 1/3

• 3/8

A bag contains 5 quarters, 2 dimes, and 4 pennies. What is the probability of picking a quarter?

• 5/6

• 3/4

• 5/11

• 4/11