Advertisements
Advertisements
Question
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:
white
Solution
\[\text{ Number of red balls } = 4\]
\[\text{ Number of black balls } = 5\]
\[\text{ Number of white balls } = 6\]
\[\text{ Total number of balls in the bag } = 4 + 5 + 6 = 15\]
\[\text{ Therefore, the total number of cases is } 15 . \]
\[\text{ Let A denote the event of getting a white ball } . \]
\[\text{ Number of favourable outcomes. number of white balls } =6\]
\[P\left( A \right) = \frac{\text{ Number of favourable outcomes }}{\text{ Total number of outcomes }} = \frac{6}{15} = \frac{2}{5}\]
APPEARS IN
RELATED QUESTIONS
List the outcomes you can see in this experiment.
Spinning a wheel
In a simultaneous throw of a pair of dice, find the probability of getting:
8 as the sum
In a simultaneou throw of a pair of dice, find the probability of getting:
an even number on first
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:
either a black card or a king
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?
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:
not red?
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 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
not green
On tossing a coin, the outcome is ______.
