Free Printable Revision: Probability

1.

A letter is selected at random from the expression: Wow Jordan is actually at school today". What is the probability that the letter is a vowel?

a)

12/32

b)

20/32

c)

3/8

d)

12/30

2.

What is the complement for passing a test?

a)

Not passing

b)

Failing

c)

Succeeding

d)

Doing well

3.

If the probability of passing a test is 0.55, what is the probability of not passing?

a)

0.40

b)

0.5

c)

0.45

d)

0.55

4.

What is the probability of rolling a number less than 1 on a regular 6-sided die?

a)

0

b)

1

c)

1/2

d)

6

5.

What probability should replace the x?

a)

0.4

b)

0.5

c)

0.6

d)

0.8

6.

Assuming that the weather today does not affect the weather tomorrow, what probability should replace the x?.6

a)

0.6

b)

0.2

c)

0.4

d)

0.8

7.

What is the probability of getting red (R) on both goes?

a)

$\frac{16}{81}$

b)

$\frac{4}{9}$

c)

$\frac{16}{9}$

d)

$\frac{20}{81}$

8.

What is the probability of getting red (R) followed by blue (B)?

a)

$\frac{16}{81}$

b)

$\frac{4}{9}$

c)

$\frac{16}{9}$

d)

$\frac{20}{81}$

9.

What probability should replace the x?

a)

$\frac{3}{10}$

b)

$\frac{3}{9}$

c)

$\frac{7}{9}$

d)

$\frac{2}{9}$

e)

$\frac{6}{9}$

10.

What probability should replace the x?

a)

$\frac{3}{10}$

b)

$\frac{3}{9}$

c)

$\frac{7}{9}$

d)

$\frac{2}{9}$

e)

$\frac{6}{9}$

11.

What probability should replace the x?

a)

$\frac{3}{10}$

b)

$\frac{3}{9}$

c)

$\frac{7}{9}$

d)

$\frac{2}{9}$

e)

$\frac{6}{9}$

12.

A group of students were asked if they studied music or drama. How many students were surveyed?

(a)

13.

What is the probability that a student chosen at random from this group studies drama AND music?

a)

$\frac{9}{43}$

b)

15

c)

$\frac{7}{43}$

d)

$\frac{15}{43}$

14.

What is the probability that a student chosen at random from this group studies drama BUT NOT music?

a)

$\frac{9}{43}$

b)

15

c)

$\frac{7}{43}$

d)

$\frac{15}{43}$

15.

What is the probability that a student chosen at random from this group does not study drama or music?

a)

$\frac{9}{43}$

b)

12

c)

$\frac{7}{43}$

d)

$\frac{12}{43}$

16.

What is the probability of drawing a King from a deck of cards in simplest form?

a)

1/52

b)

4/52

c)

1/26

d)

1/13

17.

Find the probability of obtaining a ball that is not green (correct to one decimal place).

(a)

18.

What is the sample space for tossing a coin twice?

a)

{H, T, H , T}

b)

{HH, TT, TH, HT}

c)

{H, T, TT, HH}

d)

{HH, TT, HT}

19.

A board game uses the spinner above. What is the probability that the arrow will not land on an odd number on the first spin?

a)

b)

c)

d)

20.

What is the probability you spin something larger than 10?

a)

5

b)

3/10

c)

10/15

d)

3/8

Revision: Probability

Total questions: 20

Worksheet time: 19mins

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