Advertisements
Advertisements
प्रश्न
A box contains 3 blue, 2 white and 4 red marbles. If a marbles. If a marble is drawn at random from the box, what is the probability that it will not be a white marble?
पर्याय
`1/3`
`4/9`
`7/9`
`2/9`
उत्तर
`7/9`
Explanation:
Total possible outcomes = Total number of marbles
= ( 3 + 2 + 4) = 9
Let E be the event of not getting a white marble.
It means the marble can be either blue or red but not white.
Number of favourable outcomes = (3 + 4) = 7 marbles
∴ P(not getting a white marble ) =`7/9`
APPEARS IN
संबंधित प्रश्न
Two coins are tossed simultaneously. Find the probability of getting exactly 1 head.
Two coins are tossed simultaneously. Find the probability of getting at most 1 headat most 1 head.
A die is thrown once. Find the probability of getting a number less than 5.
A die is thrown once. Find the probability of getting a number greater than 2.
A letter of English alphabet is chosen at random. Determine the probability that the chosen letter is a consonant.
A box contains cards bearing numbers 6 to 70. If one card is drawn at random from the box, find the probability that it bears a number divisible by 5.
Tickets numbered 2, 3, 4, 5, ..., 100, 101 are placed in a box and mixed thoroughly. One ticket is drawn at random from the box. Find the probability that the number on the ticket is an even number.
The probability that a number selected at random from the numbers 1, 2, 3, ..., 15 is a multiple of 4, is
A box conatins cards numbered 6 to 50. A card is drawn at random from the box. The probability that the drawn card has a number which is a perfect square is
There are 25 tickets numbered 1, 2, 3, 4,..., 25 respectively. One ticket is draw at random. What is the probability that the number on the ticket is a multiple of 3 or 5?
