Multiplication Rule of Probability

A key ring has 12 keys, 3 of which open the house door. If two keys are randomly selected without replacement, what is the probability that neither key opens the door?

Tags

CCSS.HSS.CP.B.9

CCSS.HSS.CP.A.1

There are 9 movies showing at a theater. Two are action movies, two are children’s movies, and the other movies are comedies. Ashley randomly selects 2 different movies to see. What is the probability that the first movie is an action movie and the second movie is a comedy?

Tags

CCSS.HSS.CP.B.9

CCSS.HSS.CP.B.8

Sonia has 5 yellow hair clips, 2 red hair clips, and 3 blue hair clips in her purse. What is the probability that she will randomly select one yellow hair clip and one blue hair clip without replacement?

Tags

CCSS.HSS.CP.B.9

CCSS.HSS.CP.B.8

CCSS.HSS.CP.B.6

Natasha wants to unlock the supply cabinet in her office. She has 10 cabinet keys and knows that only one of these keys will unlock the supply cabinet. If she randomly selects a key without replacement, which expression represents the probability that the third key selected will unlock the supply cabinet?

Tags

CCSS.HSS.CP.B.9

CCSS.HSS.CP.B.8

In her book bag, Jackie has one red pencil, one yellow pencil, one blue pencil, one green pencil, one orange pencil, and one purple pencil. She also has one red pen, one blue pen, and one black pen. If Jackie randomly selects one pencil and one pen, what is the probability that she will select a purple pencil and a black pen?

Tags

CCSS.HSS.CP.B.9

CCSS.HSS.CP.B.8

CCSS.HSS.CP.A.1

CCSS.HSS.CP.A.2

Brent has a shopping bag with 8 similar size containers of yogurt: 2 strawberry, 3 cherry, and 3 raspberry. If he randomly takes 2 yogurt containers from the bag without replacement, what is the probability that neither will be strawberry yogurt?

Tags

CCSS.HSS.CP.B.9

Anna has a bag of marbles for her little sister. It contains 12 red marbles, 6 white marbles, and 2 blue marbles. She drops the bag and three marbles roll out. What is the probability that all 3 marbles are white?

Tags

CCSS.HSS.CP.B.9

In a jar there are 5 yellow gums and 7 green gums. What is the probability in getting 2 yellow gums without replacement?

• 5/33

• 4/33

• 2/33

• 1/33

Tags

CCSS.HSS.CP.B.9

There are 6 snickers , 4 m&m’s and 6 cloud 9 chocolates in a box. If Mary chooses 2 of them, what is the probability if she gets 2 snickers, without replacement?

• 1/2

• 1/4

• 9/64

• 1/8

Tags

CCSS.HSS.CP.B.9

A regular 6-sided die is to be rolled once. What is the probability that a number less than 3 is rolled?

• 1/3

• 1/6

• 1/2

• 2/3

Tags

CCSS.7.SP.C.7A