Advertisements
Advertisements
प्रश्न
A bag contains 5 white and 7 red balls. One ball is drawn at random. What is the probability that ball drawn is white?
Advertisements
उत्तर
\[\text{ Number of white balls } = 5\]
\[\text{ Number of red balls }= 7\]
\[\text{ Total number of balls }= 5 + 7 = 12\]
\[ \therefore \text{ The total number of cases }= 12\]
\[\text{A gain, there are 5 white balls . Therefore, the number of favourable outcomes is 5 }. \]
\[ \therefore P\left( \text{ the drawn ball is white }\right) = \frac{\text{ Number of favourable cases }}{\text{ Total number of cases }} = \frac{5}{12}\]
APPEARS IN
संबंधित प्रश्न
A coin is flipped to decide which team starts the game. What is the probability that your team will start?
In a simultaneous throw of a pair of dice, find the probability of getting:
a number other than 5 on any dice.
Three coins are tossed together. Find the probability of getting:
exactly two heads
A card is drawn at random from a pack of 52 cards. Find the probability that the card drawn is:
a jack, queen or a king
A card is drawn at random from a pack of 52 cards. Find the probability that the card drawn is:
a heart
A bag contains 3 red balls, 5 black balls and 4 white balls. A ball is drawn at random from the bag. What is the probability that the ball drawn is:
black?
If you have a spinning wheel with 3-green sectors, 1-blue sector and 1-red sector. What is the probability of getting a green sector? Is it the maximum?
Classify the following statements under appropriate headings.
- Getting the sum of angles of a triangle as 180°.
- India winning a cricket match against Pakistan.
- Sun setting in the evening.
- Getting 7 when a die is thrown.
- Sun rising from the west.
- Winning a racing competition by you.
| Certain to happen | Impossible to happen | May or may not happen |
When a die is thrown, the probability of getting a number less than 7 is ______.
If a die is thrown, the probability of getting a number greater than 6 is 1.
