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Probabilty

Total questions: 25

Worksheet time: 50mins

Name
Class
Date
1.
A die is rolled once.  What is the probability of rolling a 5? Your answer should be a fraction in simplest form.
a)
1/6
b)
1/3
c)
2/5
d)
5/6
2.
A die is rolled once.  What is the probability of rolling an odd number? Your answer should be a fraction in simplest form.
a)
1/6
b)
1/2
c)
3/6
d)
2/5
3.
A die is rolled once.  What is the probability of rolling NOT a 4? Your answer should be a fraction in simplest form.
a)
4/6
b)
1/6
c)
1/5
d)
5/6
4.
Probability is ...
a)
the chance that some event will occur.
b)
a game that involves coins.
c)
a guarantee.
5.
A jar contains 2 pink, 6 red, and 4 blue marbles. If you pick one marble without looking, what is the probability that the marble you pick will be red or blue?
a)
5/6
b)
1/2
c)
1/3
d)
1/6
6.
The chart below represents the number of marbles in a jar.
P(green) = 
a)
5/19
b)
10/28
c)
5/14
7.
P(not A) = 
*Remember to simplify.*
a)
6/8
b)
3/4
c)
2/8
d)
1/4
8.
A set of all possible outcomes is known as - 
a)
a list
b)
a complement
c)
a sample space
d)
an event
9.
What is the probability of flipping a coin and getting heads?
a)
1/2
b)
1/3
c)
1/4
d)
Never, Tails never fails.
10.

What is the P( not purple) on this spinner?

a)

2/5

b)

1/5

c)

4/5

d)

3/5

11.

The letters that form the word MATHEMATICS are placed in a bowl. What is the probability of choosing a letter that is a vowel?

a)

7/11

b)

4/11

c)

2/11

d)

5/26

12.
What is the probability of flipping a coin and getting heads?
a)
1/2
b)
1/3
c)
1/4
d)
Never, Tails never fails.
13.

Find the probability to get 1:

Roll dice: 1, 3, 3, 4, 4

P(1) =

a)

3/5

b)

1/6

c)

2/5

d)

1/5

14.
How many total outfit options are represented?
a)

12

b)

22

c)

3

d)

6

15.

How many outcomes are there with tossing a coin and rolling a die?

a)

2

b)

6

c)

12

d)

24

16.
Which shows the sample space for flipping two coins?
a)
H, T
b)
HH, HT, TH, TT
c)
HH, TT
d)
Dime, Nickel
17.

If you are picking a card randomly from a deck of cards, the events of picking a jack and picking a heart are mutually exclusive.

a)

True

b)

False

18.

When rolling a single dice, the events of rolling an even number and rolling a ‘5’ are mutually exclusive.

a)

True

b)

False

19.

If a spinner is numbered 1 – 8, when you spin it the events of spinning an even number and a number less than 4 are mutually exclusive.

a)

True

b)

False

20.

What are mutually exclusive events?

a)

Events that can happen at the same time

b)

Events that cannot happen at the same time

c)

Events that add up to 100%

21.

Danny has 20 chocolates. 5 are milk chocolates, 10 are dark chocolates, and 5 are white chocolates. What is the probability of getting a milk chocolate or a dark chocolate?

a)

3/4

b)

1/2

c)

1/15

d)

3/10

22.
What does the shaded portion of the Venn diagram represent?
a)
Band and Art
b)
Only Art
c)
Band or Art
d)
Neither
23.

a)

A

b)

B

c)

C

d)

D

24.

Bag with 10 red marbles, 12 blue marbles, 8 white marbles, 6 green marbles, and 4 yellow marbles.

What is the P(not green and not blue)?

a)

22/40 = 11/20

b)

20/40 = 1/2

c)

4/40 = 1/10

d)

18/40 = 9/20

25.

Danny has 20 chocolates. 5 are milk chocolates, 10 are dark chocolates, and 5 are white chocolates. What is the probability of getting a dark chocolate?

a)

5/20

b)

1/4

c)

1/2

d)

15/20