Probability: Addition Rule

A day of the week is chosen at random. What is the probability of choosing a Monday or Tuesday?

• 1/7

• 2/14

• 2/7

• None of the above

Tags

CCSS.HSS.CP.B.7

In a pet store, there are 6 puppies, 4 gerbils, and 7 parakeets. If a pet is chosen at random, what is the probability of choosing a puppy or a parakeet?

• 11/17

• 13/17

• 10/17

• None of the above

Tags

CCSS.HSS.CP.B.7

The probability of a New York teenager owning a skateboard is 0.37, of owning a bicycle is 0.81 and of owning both is 0.36. If a New York teenager is chosen at random, what is the probability that the teenager owns a skateboard or a bicycle?

• 1.18

• 0.7

• 0.82

• None of the above

Tags

CCSS.HSS.CP.B.7

A number from 1 to 10 is chosen at random. What is the probability of choosing a 5 or an even number?

• 3/5

• 1/2

• 1/5

• None of the above

Tags

CCSS.HSS.CP.B.7

A single 6-sided die is rolled. What is the probability of rolling a 2 or a 5?

• 1/3

• 2/3

• 1/2

• None of the above

Tags

CCSS.HSS.CP.B.7

A spinner has 4 equal sectors colored yellow, blue, green, and red. What is the probability of landing on red or blue after spinning this spinner?

• 1/4

• 1/2

• 3/4

• None of the above

Tags

CCSS.7.SP.C.7A

A glass jar contains 1 red, 3 green, 2 blue, and 4 yellow marbles. If a single marble is chosen at random from the jar, what is the probability that it is yellow or green?

• 3/10

• 4/10

• 7/10

• None of the above

In a math class of 30 students, 17 are boys and 13 are girls. On a unit test, 4 boys and 5 girls made an A grade. If a student is chosen at random from the class, what is the probability of choosing a girl or an A student?

• 22/30

• 17/30

• 13/30

• None of the above

Tags

CCSS.HSS.CP.B.7

On New Year's Eve, the probability of a person having a car accident is 0.09. The probability of a person driving while intoxicated is 0.32 and probability of a person having a car accident while intoxicated is 0.15. What is the probability of a person driving while intoxicated or having a car accident?

• 0.32

• 0.09

• 0.15

• 0.26

Tags

CCSS.HSS.CP.B.7

Using the spinner, what is the probability of spinning purple or green?

• $\frac{1}{6}$

• $\frac{1}{3}$

• $\frac{2}{3}$

• $\frac{5}{6}$

Tags

CCSS.HSS.CP.B.7