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प्रश्न
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
white
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उत्तर
\[\text{ Number of red marbles }= 5\]
\[\text{ Number of white marbles }= 8\]
\[\text{ Number of green marbles } = 4\]
\[\text{ Total number of marbles in the bag } = 5 + 8 + 4 = 17\]
\[ \therefore \text{ Total number outcomes }= 17\]
\[\text{ Let B be the event of drawing a white ball } . \]
\[ \therefore P\left( B \right) = \frac{\text{ Number of favourable outcomes }}{\text{ Total number of outcomes }} = \frac{8}{17}\]
संबंधित प्रश्न
Numbers 1 to 10 are written on ten separate slips (one number on one slip), kept in a box and mixed well. One slip is chosen from the box without looking into it. What is the probability of.
- Getting a number 6?
- Getting a number less than 6?
- Getting a number greater than 6?
- Getting a 1-digit number?
In a simultaneou throw of a pair of dice, find the probability of getting:
an even number on first
A card is drawn at random from a pack of 52 cards. Find the probability that the card drawn is:
a black king
A card is drawn at random from a pack of 52 cards. Find the probability that the card drawn is:
the ace of spades
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:
red or white
If you put 21 consonants and 5 vowels in a bag. What would carry greater probability? Getting a consonant or a vowel? Find each probability.
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?
When a die is thrown, the probability of getting a number less than 7 is ______.
Rohit collected the data regarding weights of students of his class and prepared the following table:
| Weight (in kg) | 44 – 47 | 48 – 51 | 52 – 55 | 56 – 60 |
| Number of Students | 3 | 5 | 25 | 7 |
A student is to be selected randomly from his class for some competition. The probability of selection of the student is highest whose weight is in the interval ______.
A coin is tossed 15 times and the outcomes are recorded as follows:
H T T H T H H H T T H T H T T. The chance of occurrence of a head is 50 per cent.
