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PBD Probability

Total questions: 25

Worksheet time: 50mins

Name
Class
Date
1.
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
2.
The chart below represents the number of marbles in a jar.
P(green) = 
a)
5/19
b)
10/28
c)
5/14
3.
P(not A) = 
*Remember to simplify.*
a)
6/8
b)
3/4
c)
2/8
d)
1/4
4.
Rolling a 15 on a number cube is 
a)
Impossible
b)
Certain
c)
Unlikely
d)
Equally Likely
5.
You pick a marble from this bag.
What is the probability you will choose either a black or white marble?
a)
3/5
b)
9/100
c)
1/10
d)
2/5
6.

Find the probability of rolling a 7 on a single die.

a)

1/6

b)

7/6

c)

0

d)

1

7.
If a stone is dropped at random on the arrangement of tiles shown, what is the probability the stone lands on a black tile?
a)
5/9
b)
4/9
c)
1/2
d)
1/9
8.

The letters that form the word ALGEBRA are placed in a bowl. What is the probability of choosing a letter other than “A”?

a)

2/7

b)

5/49

c)

5/7

d)

10/49

9.

What is the probability of getting an odd number when you roll a dice?

a)

imposible

b)

unlikely

c)

even chance

d)

likely

10.
Probability can be written as ...
a)
a fraction
b)
a decimal
c)
a percent
d)
all of the above
11.
Probability is ...
a)
the chance that some event will occur.
b)
a game that involves coins.
c)
a guarantee.
12.
What is an outcome?
a)
The result of an experiment
b)
The chance or likelihood of an event
c)
A fraction, decimal, or a percent
d)
An activity that gives various results
13.
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
14.
An automobile dealer decides to select a month for its annual sale.  Find the probability that it will be September or October.
a)
1/12
b)
1/6
c)
1/4
d)
5/6
15.

Sam rolled a number cube 50 times. A '3' appeared 10 times. Find the probability of getting numbers that are not '3'.

a)

 1050\frac{10}{50}  

b)

 2050\frac{20}{50}  

c)

 4050\frac{40}{50}  

d)

 3050\frac{30}{50}  

16.

Christian Dayne drew a random set of cards from a well -shuffled deck of 52 playing cards. He recorded the suit of cards that he picked; results are shown in the table. Find the probability of selecting a diamond?

a)

 40.63%40.63\%  

b)

 25%25\%  

c)

 12.5%12.5\%  

d)

 21.88%21.88\%  

17.

You flip a coin three times.

Find the probability that all flips will land on tails.

a)

1/2

b)

1/4

c)

1/6

d)

1/8

18.

Which of the following are possible samples spaces for tossing 2 coins? (May be more than one correct answer)

a)

{H, T, H, T}

b)

{HH, HT, TH, TT}

c)

{H, T}

d)

{T, H}

e)

{TT, HH, TH, HT}

19.

An unprepared student takes a 3-question true/false quiz in which he guesses the answers to all 3 questions. What is the probability he gets all 3 correct?

a)

1/2

b)

1/3

c)

1/6

d)

1/8

20.

Which of these cannot be considered a probability of an outcome?

a)

1/3

b)

-1/5

c)

0.80

d)

112%

e)

1

21.
Probability can be expressed as a number between_____ and _____.
a)
0 and 100
b)
0 and 10
c)
0 and 1
d)
-1 and 1
22.
Probability can be written as ...
a)
a fraction
b)
a decimal
c)
a percent
d)
all of the above
23.
What is the probability of spinning green?
a)
0
b)
1/4
c)
1/2
d)
3/4
24.
What is the probability of spinning red?
a)
0
b)
1/2
c)
3/4
d)
1
25.

Which event has a probability of zero or impossible to happen?

a)

Rolling a 7 on a 6 sided dice.

b)

Tossing a coin and landing on heads.

c)

Rolling an even number on a dice.

d)

The sun rising in the morning.

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