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प्रश्न
An urn contains 10 red and 8 white balls. One ball is drawn at random. Find the probability that the ball drawn is white.
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उत्तर
\[\text{ Number of red balls } = 10\]
\[\text{ Number of white balls }= 8\]
\[\text{ Total number of balls in the urn } = 10 + 8 = 18\]
\[\text{ Therefore, the total number of cases is 18 and the number of favourable cases is 8 }. \]
\[ \therefore P\left( \text{ The ball drawn is white }\right) = \frac{\text{ Number of favourable cases }}{\text{ Total number of cases }} = \frac{8}{18} = \frac{4}{9}\]
संबंधित प्रश्न
When a die is thrown, list the outcome of an event of getting a number greater than 5.
Tell whether the given is certain to happen, impossible, can happen but not certain.
A tossed coin will land heads up.
Three coins are tossed together. Find the probability of getting:
at least two heads
Three coins are tossed together. Find the probability of getting:
no tails
A card is drawn at random from a pack of 52 cards. Find the probability that the card drawn is:
spade or an ace
A card is drawn at random from a pack of 52 cards. Find the probability that the card drawn is:
a red card
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 |
There are 2 aces in each of the given set of cards placed face down. From which set are you certain to pick the two aces in the first go?
In the previous question, what is the probability of picking up an ace from set (d)?
When a coin is tossed, there are 2 possible outcomes.
