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Probability

Total questions: 18

Worksheet time: 2hrs 42mins

Name
Class
Date
1.

If you select a marble without looking, how likely is it that you will pick a black one?

a)

certain

b)

probable

c)

unlikely

d)

impossible

2.

If you flip a coin, what is the probability that it will land on heads?

a)

1/4

b)

1/8

c)

1/2

d)

1/3

3.

If you select a marble without looking, what is the probability that it will be blue?

a)

1/3

b)

2/5

c)

1/6

d)

impossible

4.
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
5.
What is the probability of selecting an orange candy?
a)
0%
b)
25%
c)
50%
d)
100%
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.
What is the probability of rolling an even number on a dice. The dice is numbered 1-6.
a)
3/6
b)
1/2
c)
1/6
d)
5/6
9.
A bag of marbles contains 5 red, 7 purple, and 3 blue marbles. If one marble is chosen at random, what is the probability that the marble is NOT blue?
a)
4/5
b)
1/5
c)
3/5
d)
2/5
10.
How many outcomes are there with tossing a coin and rolling a dice?
a)
2
b)
6
c)
12
d)
24
11.
Which of the following situations is represented by this tree diagram?
a)
3 shirt options, 6 pants options, and 12 shoe options
b)
3 shirt options, 2 pants options, and 2 shoe options
c)
2 shirt options, 3 pants options, and 1 shoe option
12.
Two fair coins are tossed. What is the probability of getting at most one head? (Hint: Create a sample space)
a)
1/2
b)
3/4
c)
1/4
d)
1
13.
When two events are mutually exclusive, P(A or B) = P(A) + P(B)
a)
True
b)
False
14.
The sample space for tossing 3 coins consists of how many outcomes?
a)
2
b)
4
c)
6
d)
8
15.

Find the number of words, with or without meaning, that can be formed with the letters of the word ‘CHAIR’.

a)

5

b)

3125

c)

120

d)

25

16.

An election of a working group wants to select three students from a group of six candidates. In how many ways can this be done?

a)

6!

b)

120

c)

20

d)

3!

17.

Let’s say we have 8 people:


1: Ann

2: Jimmy

3: Carson

4: Jason

5: Katrina

6: Kenneth

7: Ernest

8: Cherry


How many ways can we award a 1st, 2nd and 3rd place prize among 8 contestants? (Gold / Silver / Bronze)

a)

56

b)

336

c)

3/8

d)

1/512

18.

This padlock should be called as.....

a)

Combination padlock

b)

Permutation padlock

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