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In a single throw of a dice, find the probability of getting a number less than 8. - Mathematics

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प्रश्न

In a single throw of a dice, find the probability of getting a number less than 8.

बेरीज

उत्तर

Sample space = {1, 2, 3, 4, 5, 6} 

n(S) = 6 

If we consider to find the probability of number less than 8, then all six cases are favourable

n(E) = 6 

Probability of getting a number less than 8 = P(S)

= `(n(E))/(n(S))`

= `6/6`

= 1

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पाठ 25: Probability - Exercise 25 (A) [पृष्ठ ३८६]

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सेलिना Mathematics [English] Class 10 ICSE
पाठ 25 Probability
Exercise 25 (A) | Q 10.3 | पृष्ठ ३८६

संबंधित प्रश्‍न

In a single throw of a dice, find the probability of getting a number less than or equal to 4.


A dice is thrown once. Find the probability of getting an even number.


Write sample space ‘S’ and number of sample point n(S) for the following experiment. Also write events A, B, C in the set form and write n(A), n(B), n(C).

From three men and two women, environment committee of two persons is to be formed.
Condition for event A : There must be at least one woman member.
Condition for event B : One man, one woman committee to be formed.
Condition for event C : There should not be a woman member.


If two coins are tossed, find the probability of the following event.
Getting no head ?


There are 15 tickets in a box, each bearing one of the numbers from 1 to 15. One ticket is drawn at random from the box. Find the probability of event that the ticket drawn - shows an even number.


A die is thrown. Write the sample space. If P is the event of getting an odd number, then write the event P using set notation.


Write a sample space if two coins are tossed simultaneously


Two coins are tossed simultaneously. Write the sample space (S) and expected sample points in the given events by completing the activity.

  1. Event A: to get at least one head.
  2. Event B: to get no head.

Activity: Let ‘S’ be the sample space, when two coins are tossed simultaneously.

∴ S = `{square, HT, TH, square}`

i. Event A: to get at least one head.

∴ A = `{HH, square, TH}`

ii. Event B: to get no head.

∴ B = `{square}`.


Two coins are tossed simultaneously. The probability of getting at the most one head is ______.


Two coins are tossed simultaneously. Complete the following activity to write the sample space and the given events A and B in the set form:

Event A: To get at least one head.

Event B: To get no head.

Activity:

Two coins are tossed simultaneously.

∴ Sample space is

S = `{square, HT, TH, square}`

Event A: To get at least one head.

∴ A = `{square, HT, TH}`

Event B: To get no head.

∴ B = `{square}`


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