Advertisements
Advertisements
प्रश्न
A die is thrown. Find the probability of getting:
a prime number
Advertisements
उत्तर
\[\text{ When a die is thrown, the possible outcomes are 1, 2, 3, 4, 5 and 6 } . \]
\[\text{ Thus, the sample space will be as follow }: \]
\[S = \left\{ 1, 2, 3, 4, 5, 6 \right\}\]
\[\text{ Let A be the event of getting a prime number } . \]
\[\text{ There are 3 prime numbers (2, 3 and 5) in the sample space } . \]
\[\text{ Thus, the number of favourable outcomes is 3 . \]
\[Hence, the probability of getting a prime number is as follow }: \]
\[P\left( A \right) = \frac{\text{ Number of favourable outcomes }}{\text{ Total number of outcomes }} = \frac{3}{6} = \frac{1}{2}\]
APPEARS IN
संबंधित प्रश्न
In a simultaneou throw of a pair of dice, find the probability of getting:
a doublet of odd numbers
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:
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
not green
Numbers 1 to 5 are written on separate slips, i.e one number on one slip and put in a box. Wahida pick a slip from the box without looking at it. What is the probability that the slip bears an odd number?
In the previous question, what is the probability of picking up an ace from set (d)?
On tossing a coin, the outcome is ______.
If a die is thrown, the probability of getting a number greater than 6 is 1.
Following cards are put facing down:
\[\boxed{\text{A}}\] \[\boxed{\text{E}}\] \[\boxed{\text{I}}\] \[\boxed{\text{O}}\] \[\boxed{\text{U}}\]
What is the chance of drawing out
- a vowel
- a card marked U
- A or I
- a consonant
Classify the following events:
Getting head when a coin is tossed.
Classify the following events:
A ball thrown up in the air will fall down after some time.
