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In a single throw of a dice, find the probability of getting a number greater than 4. - Mathematics

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प्रश्न

In a single throw of a dice, find the probability of getting a number greater than 4.

बेरीज

उत्तर

Sample space = {1, 2, 3, 4, 5, 6} 

n(s) = 6 

E = event of getting a number greater than 4 = {5, 6} 

n(E) = 2 

Probability of a number greater than 4 = `(n(E))/(n(s)) = 2/6 = 1/3`

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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 3.1 | पृष्ठ ३८६

संबंधित प्रश्‍न

A die is thrown. If A is the event that the number on upper face is less than 5, then write sample space and event A in set notation.


‘A coin is tossed’. Write the sample space ‘S’.


A bag contains 3 white, 5 black and 2 red balls, all of the same shape and size. A ball is drawn from the bag without looking into it, find the probability that the ball drawn  

a red ball.


A bag contains 3 white, 5 black and 2 red balls, all of the same shape and size. A ball is drawn from the bag without looking into it, find the probability that the ball drawn White ball.


In a single throw of a dice, find the probability of getting a number not greater than 4.


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


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).
One die is rolled,
Event  A : Even number on the upper face. 
Event  B : Odd number on the upper face.
Event  C : Prime number on the upper face.


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).

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Condition for event A : To get at least two heads. 
Condition for event B : To get no head.
Condition for event C : To get head on the second coin.


There are 9 tickets in a box, each bearing one of the numbers from 1 to 9. 
One ticket is drawn at random from the box.  
Event A: Ticket shows an even number. 
Complete the following activity from the given information: 

Activity:

S = {__________}

n(S) = ____________

A = {________}

n(A) = ___________


Form a ‘Road Safety Committee’ of two, from 2 boys (B1, B2) and 2 girls (G1, G2).

Complete the following activity to write the sample space :

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  3. Committee of one boy and one girl = `{B_1G_1, B_1G_2, square, square}`
  4. ∴ Sample space (S) = `{(B_1 B_2),(B_1 G_1), square, square, (B_2 G_2),(G_1 G_2)}`

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