Advertisements
Advertisements
प्रश्न
A bag contains 5 red, 8 white and 7 black balls. A ball is drawn at random from the bag. Find the probability that the drawn ball is red or white
उत्तर
Total no. of possible outcomes = 20 {5 red, 8 white & 7 black}
E ⟶ event of drawing red or white ball
No. of favourable outcomes = 13 {5 red, 8 white}
Probability, P(E) =`"No.of favorable outcomes"/"Total no.of possible outcomes"`
P(E) = 13/20
APPEARS IN
संबंधित प्रश्न
A bag contains 5 black, 7 red and 3 white balls. A ball is drawn from the bag at random. Find the probability that the ball drawn is Red
In a class, there are 18 girls and 16 boys. The class teacher wants to choose one pupil form class monitor. What she does, she writes the name of each pupil on a card and puts them into a basket and mixes thoroughly. A child is asked to pick one card from the basket. What is the probability that the name written on the card is the name of a girl?
A bag contains 5 red, 8 white and 7 black balls. A ball is drawn at random from the bag. Find the probability that the drawn ball is neither white nor black.
Two dice are thrown simultaneously. What is the probability that 5 will not come up on either of them?
Fill in blank:
Probability of a sure event is...........
There are six cards in a box, each bearing a number from 0 to 5. Find the probability of the following event, that a card drawn show, a number is greater than 5.
1000 families with 2 children were selected randomly , and the following data were recorded :
| Number of girls in a family | 0 | 1 | 2 |
| Number of families | 333 | 392 | 275 |
Find the probability of a family , having
(ii) 2 girls
The probability of getting exactly one head in tossing a pair of coins is ____________.
All the jacks, queens and kings are removed from a deck of 52 playing cards. The remaining cards are well shuffled and then one card is drawn at random. Giving ace a value 1 similar value for other cards, find the probability that the card has a value less than 7
From a well-shuffled deck of 52 playing cards, a card is drawn at random. What is the probability of getting a red queen?
