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Simple Probability (NOT, or, Prime, and composite)

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

There are 3 blue marbles, 7 red marbles, 4 white marbles, and 6 yellow marbles in a bag. You reach into the bag to pull out a marble.


What is the probability you pull out a blue marble?

Make sure your fraction is in simplest form :)

a)

3/20

b)

7/20

c)

1/5

d)

3/10

2.

There are 3 blue marbles, 7 red marbles, 4 white marbles, and 6 yellow marbles in a bag. You reach into the bag to pull out a marble.


What is the probability you pull out a white marble?

Make sure your fraction is in simplest form :)

a)

3/20

b)

7/20

c)

1/5

d)

3/10

3.

There are 3 blue marbles, 7 red marbles, 4 white marbles, and 6 yellow marbles in a bag. You reach into the bag to pull out a marble.


What is the probability you pull out a blue OR white marble?

Make sure your fraction is in simplest form :)

a)

3/20

b)

7/20

c)

1/5

d)

3/10

4.

There are 3 blue marbles, 7 red marbles, 4 white marbles, and 6 yellow marbles in a bag. You reach into the bag to pull out a marble.


What is the probability you pull out a blue, white, yellow, or red marble?

Make sure your fraction is in simplest form :)

a)

13/20

b)

11/20

c)

1

d)

17/10

5.

There are 3 blue marbles, 7 red marbles, 4 white marbles, and 6 yellow marbles in a bag. You reach into the bag to pull out a marble.


What is the probability you DON'T pull out a yellow or red marble?

Make sure your fraction is in simplest form :)

a)

7/20

b)

12/20

c)

15/20

d)

6/10

6.

There are 3 blue marbles, 7 red marbles, 4 white marbles, and 6 yellow marbles in a bag. You reach into the bag to pull out a marble.


What is the probability you pull out a red marble?

a)

7/20

b)

12/20

c)

15/20

d)

6/10

7.

There are 3 blue marbles, 7 red marbles, 4 white marbles, and 6 yellow marbles in a bag. You reach into the bag to pull out a marble.


What is the probability you pull out NOT a yellow marble?

Make sure your fraction is in simplest form :)

a)

14/20

b)

7/10

c)

6/20

d)

3/10

8.

There are 3 blue marbles, 7 red marbles, 4 white marbles, and 6 yellow marbles in a bag. You reach into the bag to pull out a marble.


What is the probability you pull out a yellow marble?

Make sure your fraction is in simplest form :)

a)

14/20

b)

7/10

c)

6/20

d)

3/10

9.

There are 3 blue marbles, 7 red marbles, 4 white marbles, and 6 yellow marbles in a bag. You reach into the bag to pull out a marble.


What is the probability you pull out NOT a white marble?

Make sure your fraction is in simplest form :)

a)

4/20

b)

2/10

c)

16/20

d)

4/5

10.

There are 3 blue marbles, 7 red marbles, 4 white marbles, and 6 yellow marbles in a bag. You reach into the bag to pull out a marble.


What is the probability you pull out a green marble?

Make sure your fraction is in simplest form :)

a)

0

b)

3/10

c)

6/20

d)

7/20

11.

If a number cube is thrown, what is the probability of the following:


The number showing is a 3?

Make sure your fraction is in simplest form :)

a)

1/6

b)

1/2

c)

5/6

d)

3/6

12.

If a number cube is thrown, what is the probability of the following:


The number showing is less than 4?

  • Make sure your probability is in simplest form.
a)

3/6

b)

1/2

c)

4/6

d)

2/3

13.

If a number cube is thrown, what is the probability of the following:


The number showing is a composite number?

Make sure your probability is in simplest form.

a)

2/6

b)

1/3

c)

4/6

d)

2/3

14.

If a number cube is thrown, what is the probability of the following:


The number showing is a 6?

Make sure your probability is in simplest form.

a)

2/6

b)

1/3

c)

1/6

d)

6/6

15.

If a number cube is thrown, what is the probability of the following:


The number showing is an even number?

Make sure your probability is in simplest form.

a)

2/6

b)

1/3

c)

1/2

d)

3/6

16.

If a number cube is thrown, what is the probability of the following:


The number showing is an odd number?

Make sure your probability is in simplest form.

a)

2/6

b)

1/3

c)

1/2

d)

3/6

17.

If a number cube is thrown, what is the probability of the following:


The number showing is a multiple of 2?

Make sure your probability is in simplest form.

a)

2/6

b)

1/3

c)

1/2

d)

3/6

18.

If a number cube is thrown, what is the probability of the following:


The number showing is a multiple of 3?

Make sure your probability is in simplest form.

a)

2/6

b)

1/3

c)

1/2

d)

3/6

19.

If a number cube is thrown, what is the probability of the following:


The number showing is a prime number?

Make sure your probability is in simplest form.

a)

2/6

b)

1/3

c)

1/2

d)

3/6

20.

If a number cube is thrown, what is the probability of the following:


The number showing is a number less than 3?

Make sure your probability is in simplest form.

a)

2/6

b)

1/3

c)

1/2

d)

3/6