Free Printable Probability

Worksheets

Probability

Total questions: 20

Worksheet time: 2hrs 29mins

Name

Class

Date

Probability is ...

the chance that some event will occur.

a game that involves coins.

a guarantee.

Probability can be written as ...

a fraction

a decimal

a percent

all of the above

You pick a marble from this bag.
What is the probability you will choose either a black or white marble?

3/5

9/100

1/10

2/5

A bag has 3 red marbles, 2 blue and 4 yellow. What is the theoretical probability of pulling a red?

3/10

3/9

1/9

1/3

The image represents which of the following?

intersection, "and"

union, "or"

intersection, "or"

union, "and"

The image represents which of the following?

intersection, "and"

intersection, "or"

union, "and"

union, "or"

Let A={1, 3, 4} and B={x|x is an even whole number less than 9}. Find A U B

{1, 3, 4}

{1, 2, 3, 4, 6,8}

{1, 2, 3, 4, 5, 6, 7, 8}

Which of the following represents the shaded region?

A union B

A intersect B

A ⊂ B

B ⊂ A

A bag contains 5 striped cubes, 3 dotted cubes, 4 white cubes and 3 red cubes. What is the probability of drawing a red cube, replacing it, and then drawing a white cube?

independent

dependent

10.

A bag contains 2 striped cubes, 3 dotted cubes, 4 white cubes and 3 red cubes. What is the probability of drawing a white cube, not replacing it, and then drawing a dotted cube?

dependent

independent

11.

What is the probability of rolling a dice and landing on a 4, and then rolling the dice again and landing on any even number?

1 ⁄ 6

1 ⁄ 8

1 ⁄ 2

1 ⁄ 12

12.

A jar contains 4 white chips, 5 purple chips, and 1 black chip. Chips are selected randomly one at a time, and are not replaced. P(purple then black)

1/18

2/5

3/7

4/9

13.

There are 15 boys in a class with 14 girls. Find the probability of selecting a girl then a boy

15/58

18/33

2/29

1/29

14.

A box contains 5 purple marbles, 3 green marbles and 2 orange marbles. Draws are made without replacement.P(both marbles are purple)

2/9

1/3

1/2

1/4

15.

Dependent probability happens when the first item is replaced, causing the total outcomes to increase by 1.

True

False

16.

Independent probability happens when the probability of the first event does not affect the probability of the second event.

True

False

17.

Suppose a number cube is rolled twice. What is the probability that an odd number will show both times?

1/3

1/2

1/6

1/4

18.

A marble bag contains 3 red marbles, 4 gray marbles, 6 white marbles, and 5 black marbles. What is the probability of randomly drawing a red marble and then a gray marble if the first marble is replaced?

1/9

1/27

1/6

2/9

19.

When randomly drawing from a standard deck of 52 playing cards, what is the probability of drawing a 9 four times in a row if the cards are not replaced?

1/5,525

1/270,725

1/28,561

1/4

20.

A science teacher gave her class two tests. 25% of the class passed both tests and 42% of the class passed the first test. What percent of those who passed the first test also passed the second?

59.5%

10.5%

1.6%

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Probability

Total questions: 20

Worksheet time: 2hrs 29mins

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