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REVISION SIMPLE PROBABILITY

Total questions: 10

Worksheet time: 20mins

Name
Class
Date
1.

What is the sample space for this spinner?

a)

1

b)

8

c)

1, 2, 3, 4, 5, 6, 7, 8

d)

50/50

2.

The probability of an event is 8/9. What's the probability of the complement to this event?

a)

1/9

b)

1

c)

2/9

d)

8/9

3.

The picture shows all 6 sides of a die. 2 of the sides are RED.


What is the probability of landing on a RED side?


Make a fraction, then simplify.

a)

15\frac{1}{5}

b)


13\frac{1}{3}

c)

14\frac{1}{4}

d)

16\frac{1}{6}

4.

If Mariana spins this spinner, she will MOST likely land on _______.

a)

red

b)

yellow

c)

blue

d)

orange

5.

P(not A) =

*Remember to simplify.*

a)

68\frac{6}{8}

b)

34\frac{3}{4}

c)

28\frac{2}{8}

d)

14\frac{1}{4}

6.

The letters that form the word ALGEBRA are placed in a bowl. What is the probability of NOT choosing a letter “A”?

a)

2/7

b)

5/49

c)

5/7

d)

10/49

7.

You spin the spinner 1 time.


What is P(7)?

a)

1%

b)

50%

c)

20%

d)

25%

8.

You pick a card at random.


What is P(5)?

a)

1/4

b)

3/4

c)

4/3

d)

4

9.

The probability of an event is 14/16. What's the probability of the complement to this event written as a fraction in simplest form?

a)

2/16

b)

1/8

c)

7/8

d)

14/16

10.

Given a set of 



T = {K, E, B, A, R, A, N, G, K, A, L, I, A, N}



One letter is randomly selected from the set. Find the probability that the letter is a consonant letter

a)

27\frac{2}{7}

b)

37\frac{3}{7}

c)

47\frac{4}{7}

d)

57\frac{5}{7}