You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard VII

Mathematics

Calculating Probability of an Event

You have an e...

Question

You have an eight-faced die. In this die, one of the faces contains 1, two faces contain 2, three faces contain 3 and other faces contain a 4 and a 5 respectively. What is the probability of getting a 3 when the die is rolled? (All outcomes are equally likely).

Open in App

Solution

Probability of an event

= $\frac{Number of desired outcomes}{Total number of outcomes of the experiment}$

Total number of outcomes = 8

Number of desired outcomes i.e. getting a 3 = 3(3 faces contain the number 3)

Therefore, Probability of getting a three when the die is rolled is $\frac{3}{8}$ .

Suggest Corrections

Similar questions

Q. You have an eight-faced die. In this die, one of the faces contains 1, two faces contain 2, three faces contain 3 and other faces contain a 4 and a 5 respectively. What is the number of favourable outcomes of obtaining a 3?

Q. A die has two faces each with number '

1

', three faces each with number '

2

' and one face with number '

3

'. The die is rolled once. The probability of not getting the number

3

is:

Q. A die has six faces numbered from

1

6

. It is rolled and number on the top face is noted. When this is treated as random trial.
(a) What are the possible outcomes?
(b) Are they equally likely? Why?
(c) Find the probability of a composite number turning up on the top face.

Q. There are two die

A

and

B

both having six faces. Die

A

has three faces marked with

1

, two faces marked with

2

, and one face marked with

3

. Die

B

has one face marked with

1

, two faces marked with

2

, and three faces marked with

3

. Both dices are thrown randomly once. If

E

be the event of getting sum of the numbers appearing on top faces equal to

x

, let

P (E)

be the probability of event

E

, then
When

x = 4

, then

P (E)

is equal to

Q. There are two die

A

and

B

both having six faces. Die

A

has three faces marked with

1

, two faces marked with

2

, and one face marked with

3

. Die

B

has one face marked with

1

, two faces marked with

2

, and three faces marked with

3

. Both dices are thrown randomly once. If

E

be the event of getting sum of the numbers appearing on top faces equal to

x

, let

P (E)

be the probability of event

E

, then

P (E)

is minimum when

x

equals to

Join BYJU'S Learning Program

You have an eight-faced die. In this die, one of the faces contains 1, two faces contain 2, three faces contain 3 and other faces contain a 4 and a 5 respectively. What is the probability of getting a 3 when the die is rolled? (All outcomes are equally likely).

Probability of an event = Number of desired outcomesTotal number of outcomes of the experiment Total number of outcomes = 8 Number of desired outcomes i.e. getting a 3 = 3(3 faces contain the number 3) Therefore, Probability of getting a three when the die is rolled is 38.