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STA108-Probability

Total questions: 20

Worksheet time: 37mins

Name
Class
Date
1.

Each of the letters of the word CAMBRIDGE is written on a card and the cards are placed in a line. How many arrangements are there?

a)

362880

b)

720

c)

3400

d)

25700

2.

Each of the letters of the word CAMBRIDGE is written on a card and the cards are placed in a line.How many arrangement begin with CAM

a)

362800

b)

720

c)

60480

d)

84

3.

Issam has 11 different CDs of which 6 are pop music,3 are jazz and 2 are classical. How many different arrangements of all 11 CDs on a shelf are there if the jazz CDs are all?

a)

3! X 9!=2177280

b)

12!=479001600

c)

6! X 3! X 2!=8640

4.

A regular 6-sided die is to be rolled one time. What is the probability that the number 5 is rolled?

a)

1/5

b)

5/6

c)

1/6

d)

6/5

5.

A coin is to be tossed twice. p(t, t) = ___

a)

1/4

b)

1/2

c)

2

d)

1/8

6.

Safebank requires its customers to use a four-digit PIN to access their accounts. Customer can choose any set of 4 digits may be repeated. How many possible four digits PINs are there?

a)

456 769

b)

456 976 000

c)

10 000

7.

In how many ways can 5 boys and 3 girls stand in a straight line if there is no restriction?

a)

720

b)

40320

c)

35600

d)

43500

8.

Probability can only value between which two numbers?

a)

-1 to 1

b)

0 to 1

c)

0 to 2

d)

-3 to 3

9.
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
10.
Find the probability of rolling a 7 on a single die.
a)
1/6
b)
7/6
c)
0
d)
7/7
11.
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
12.

Use the tree diagram to find the probability of tossing a head first and then a tail when a coin is tossed twice.

a)

1

b)

1/2

c)

1/4

d)

1/3

13.
Probability is ...
a)
the chance that some event will occur.
b)
a game that involves coins.
c)
a guarantee.
14.
Experimental Probability is:
a)
What Will happen 
b)
What actually happens
c)
What should happen
d)
What I think Happens
15.
Probability can be written as ...
a)
a fraction
b)
a decimal
c)
a percent
d)
all of the above
16.
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
17.
The chart below represents the number of marbles in a jar.
P(green) = 
a)
5/19
b)
10/28
c)
5/14
18.

What is the sample space?

a)

6 bears

b)

orange, green, red, white, yellow

c)

unlikely

d)

2 red bears

19.

A security code consists of 4 letters chosen from A,B,C,D,E,F,G and followed by 3 digits chosen from 0,1,2,3,4,5. how many 5 combination security codes if the repetitions are not allowed?

a)

840

b)

120

c)

100 800

d)

3000

20.

From a class of 20 students,3 students are going to be chosen to be sports officials. The first student will be the swimming captain, the second student the athletics captain, and the third student the tennis captain. In how many different ways can the officials be chosen?

a)

1140

b)

3500

c)

6840

d)

2433870