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Probability Review

Last updated almost 5 years ago

18 questions

Note from the author:

Probability

1

Samuel has a bag containing 6 blue marbles, 2 red marbles, and 4 green marbles. What is the probability of Samuel pulling a blue marble, not replacing it, and then pulling a marble other than blue from the bag?

1

Jacobi has a jar with 12 marbles, 5 are red. What is the probability of selecting a red marble from the jar? What is the complement? (Example for answer 1/30 and 3/25 to enter both answers)

1

The probability of drawing a red marble from a bag is 1/9. The probability of drawing a green marble from a different bag is 1/5. If a marble is drawn from each bag, what is the probability of drawing a red marble out of the first bag and a green marble out of the second bag?

1

On the first day of school, Ms. Miller places 9 blue and 16 green pencils on each of her 25 desks. As students arrive, she randomly assigns them a desk. What is the probability that the first student will be assigned a desk with a blue pencil?

1

If a number cube is rolled once and a coin is flipped once, what is the probability that an even number will be rolled, and the coin will land on heads?

1

Rafael flips four coins. What is the probability of them all landing on tails?

1

Martha had a bag containing 8 red, 2 green, 5 purple, and 4 blue tiles. What is the probability of drawing a green tile, not replacing it, and then drawing a red tile?

1

Natalie had four different cheerleading tops: a purple tank, a purple sweater, a gold tank, and a gold sweater. What is the probability of Natalie randomly selecting a gold top on Monday, not replacing it, and then randomly selecting a purple top on Tuesday?

1

The probability of selecting a purple marble from the first bag is 1/8. The probability of selecting a green marble from the second bag is 1/6. If one marble is selected from each bag, what is the probability of selecting a purple marble from the first bag, then selecting a marble other than green from the second bag?

1

Mrs. Gonzalez has 27 students in her class. Eighteen students completed their homework on time. What is the probability of students that have not completed their homework?

1

Brad has these bags of chips in his kitchen cabinet:
- 6 bags of Funyuns
- 4 bags of Takis
- 3 bag of Doritos
Brad will randomly choose one bag of chips without replacing it, and randomly choose another bag of chips. What is the probability that he will choose a bag of Funyuns and then a bag of Doritos?

1

Larissa has a bag of candy. There are a total of 14 candies in the bag, 7 Reese’s Pieces , 4 Skittles, and the rest are Jolly Ranchers. What is the probability of choosing a Jolly Rancher, eating it and then choosing Skittles?

1

Liam has a bag containing 5 red, 2 blue, 5 green, 6 yellow, and 2 white marbles that are all the same size and shape. What is the probability of randomly choosing a green marble on the first pick, not replacing it, and then randomly choosing a green marble on the second pick?

1

Melissa ordered pizza with 8 slices. Three slices of pizza have cheese, and the rest are only jalapenos . What is the probability of Melissa randomly taking a slice of pizza with cheese?

1

A fair number cube and a spinner are used in a game. The faces of the number cube are labeled 1 through 6. The spinner has an equal chance of landing on 1 of 5 colors: red, green, blue, yellow or black. What is the probability of a player rolling an even number and then spinning green?

1

P (a number) =

1

P (4) =

1

A spinner and a fair number cube are used in a game. The spinner has an equal chance of landing on 1 of 6 colors: red, purple, blue, green, white, or orange. The faces of the cube are labeled 1 through 6. What is the probability of a player spinning the color green and then rolling an even number?