Simple Probability and Its Complement

What is the probability of spinning an odd number on the spinner?

• 1/5

• 2/5

• 3/5

• 4/5

What is the probability of spinning a purple on the following spinner?

• 1

• 1/3

• 1/2

• 3/3

Cleo is making a model of the 9 planets in the solar system, and she needs Mars and Pluto. The clerk at the hobby shop draws a planet at random from a bin that has one of each planet in the solar system. What is the probability that he will NOT draw one of the two planets Cleo needs?

• 1/9

• 2/9

• 2/3

• 7/9

What is the probability of choosing a red marble if there are 8 red marbles in a jar of 15?

• P = 3/15

• P = 7/15

• P = 8/15

• P = 15/8

What is the probability of flipping a coin 20 times and landing on heads 11 times?

• P = 1/10

• P = 11/20

• P = 9/20

• P = 10/20

What is the complement of it snowing 3 days out of the week?

• P' = 4/7

• P' = 2/7

• P' = 5/7

• P' = 3/7

How likely are you to roll an even number of a regular die?

• P = 2/6

• P = 1/2

• P = 1/3

• P = 2/3

Use the spinner to determine the probability of the given event. Find P(5 or 7)

A refrigerator has a variety of drinks. The contents are shown below. If one drink is picked randomly, then which of the following is NOT true?

• You are twice as likely to select a cola than a water.

• You are half as likely to select a lemonade than a water.

• You are more likely to select a cola than a water or a lemonade.

• You are twice as likely to select a water than a cola.

Use the spinner to determine the probability of the given event.

Find P(red)