Advertisements
Advertisements
प्रश्न
In a single throw of a dice, find the probability of getting a number less than or equal to 4.
उत्तर
Sample space = {1, 2, 3, 4, 5, 6}
n(s) = 6
E = event of getting a number less than or equal to 4 = {1, 2, 3, 4}
n(E) = 4
Probabitity of a number less than or equal to 4 = `(n(E))/(n(s)) = 4/6 = 2/3`
APPEARS IN
संबंधित प्रश्न
A die is thrown. Write the sample space (S) and number of sample points n(S) and also write event A of getting even number on the upper surface and write n(A).
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.
A dice is thrown once. Find the probability of getting an even number.
In the month of March 2019, Find the days on which the date is a multiple of 5. (see the given page of the calender)
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).
Three coins are tossed simultaneously.
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.
If two dice are rolled simultaneously, find the probability of the following event.
The digit on the first die is greater than the digit on second die.
A two digit number is formed with digits 2, 3, 5, 7, 9 without repetition. What is the probability that the number formed is an odd number?
A two digit number is formed with digits 2, 3, 5, 7, 9 without repetition. What is the probability that the number formed is a multiple of 5 ?
A two-digit number is formed with digits 2, 3, 5 without repetition. Write the sample space
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 :
- Committee of 2 boys = `{square}`
- Committee of 2 girls = `{square}`
- Committee of one boy and one girl = `{B_1G_1, B_1G_2, square, square}`
- ∴ Sample space (S) = `{(B_1 B_2),(B_1 G_1), square, square, (B_2 G_2),(G_1 G_2)}`
