Advertisements
Advertisements
प्रश्न
If you have a collection of 6 pairs of white socks and 3 pairs of black socks. What is the probability that a pair you pick without looking is
black?
Advertisements
उत्तर
\[\text{ Number of pairs of white socks }= 6 \]
\[\text{ Number of pairs of black socks }= 3 \]
\[\text{ Total number of pairs of socks } = 6 + 3 = 9 \]
\[ \therefore \text{ Number of possible outcomes }= 9\]
\[\text{ Let B be the event of getting a pair of black socks }. \]
\[ \therefore P\left( B \right) = \frac{3}{9} = \frac{1}{3}\]
संबंधित प्रश्न
In a simultaneous throw of a pair of dice, find the probability of getting:
a sum less than 7
A card is drawn at random from a pack of 52 cards. Find the probability that the card drawn is:
a ten
A bag contains 4 red, 5 black and 6 white balls. A ball is drawn from the bag at random. Find the probability that the ball drawn is:
not black
A bag contains 3 red balls and 5 black balls. A ball is drawn at random from the bag. What is the probability that the ball drawn is:
red
A bag contains 5 red marbles, 8 white marbles, 4 green marbles. What is the probability that if one marble is taken out of the bag at random, it will be
red
What is the probability of choosing a vowel from the alphabets?
In a school only, 3 out of 5 students can participate in a competition. What is the probability of the students who do not make it to the competition?
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 |
In the previous question, what is the probability of picking up an ace from set (d)?
In a school, only 2 out of 5 students can participate in a quiz. What is the chance that a student picked at random makes it to the competition?
