Advertisements
Advertisements
प्रश्न
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:
black
Advertisements
उत्तर
\[\text{ Number of red balls } = 3\]
\[\text{ Number of black balls } = 5\]
\[\text{ Total number of balls }= 3 + 5 = 8\]
\[\text{ Let B be the event of drawing a black ball }. \]
\[ \therefore P\left( B \right) = \frac{\text{ Number of favourable outcomes }}{\text{ Total number of outcomes }} = \frac{5}{8}\]
APPEARS IN
संबंधित प्रश्न
When a die is thrown, list the outcomes of an event of getting a prime number.
Find the probabilities of the events given in Question 2.
Tell whether the given is certain to happen, impossible, can happen but not certain.
Tomorrow will be a cloudy day.
A coin is flipped to decide which team starts the game. What is the probability that your team will start?
A box contains pairs of socks of two colours (black and white). I have picked out a white sock. I pick out one more with my eyes closed. What is the probability that it will make a pair?
Three coins are tossed together. Find the probability of getting:
at least one head and one tail
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:
white?
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?
Following cards are put facing down:
| A | E | I | O | U |
What is the chance of drawing out a consonant?
Classify the following events:
Christmas will be on 25 December.
