Home
Class 12
MATHS
An urn contains 5 red and 5 black balls....

An urn contains 5 red and 5 black balls. A ball is drawn at random, its colour is noted and is returned to the urn. Moreover, 2 additional balls of the colour drawn are put in the urn and then a ball is drawn at random. What is the probability that the second ball is red?

Text Solution

Verified by Experts

The correct Answer is:
`(1)/(2)`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • PROBABILITY

    NCERT GUJARATI|Exercise EXERCISE 3.4|16 Videos

  • PROBABILITY

    NCERT GUJARATI|Exercise EXERCISE 3.5|15 Videos

  • PROBABILITY

    NCERT GUJARATI|Exercise EXERCISE 3.2|18 Videos

  • MATRICES

    NCERT GUJARATI|Exercise Miscellaneous Exercise on Chapter 3|15 Videos

  • RELATIONS AND FUNCTIONS

    NCERT GUJARATI|Exercise MISCLELLANEOUS EXERCISE ON CHAPTER 1|19 Videos

Similar Questions

Explore conceptually related problems

An urn contains m white and n black balls. A ball is drawn at random and is put back into the urn along with k additional balls of the same colour as that of the ball drawn. A ball is again drawn at random. Show that the probability of drawing a white ball now does not depend on k.

Urn A contains 6 red and 4 black balls and urn B contains 4 red and 6 black balls. One ball is drawn at random from urn A and placed in urn B. Then, one ball is drawn at random from urn B and placed in urn A. If one ball is drawn at random from urn A, the probability that it is found to be red, is....

Knowledge Check

  • A bag contains 5 red and 3 blue balls. If 3 balls are drawn at random without replacement the probability of getting exactly one red ball is ……..

    A
    `(45)/(196)`
    B
    `(135)/(392)`
    C
    `(15)/(56)`
    D
    `(15)/(29)`

    • Similar Questions

    Explore conceptually related problems

    A bag contains 8 red and 5 white balls. Three balls are drawn at random. Find the Probability that All the three balls are red

    A bag contains 8 red and 5 white balls. Three balls are drawn at random. Find the Probability that All the three balls are white

    An urn contains 2 white and 2 black balls .A ball is drawn at random.If it is white ,it is not replace into urn ,otherwise it is replaced along with another ball of the same colour .the process is repeated , then find the probabiltiy that the third ball drawn is black.

    A box has 5 blue and 4 red balls. One ball is drawn at random and not replaced. Its colour is also not noted. Then, another ball is drawn at random. What is the probability of second ball being blue ?

    Given that the drawn ball from U2 is white, the probability that head appeared on the coin

    A bag contains 8 red and 5 white balls. Three balls are drawn at random. Find the Probability that One ball is red and two balls are white

    A bag contains 4 white and 5 black balls. Another bag contains 9 white and 7 black balls. A ball is transferred from the first bag to the second and then a ball is drawn at random from the second bag. Find the probability that the ball drawn is white.

    Home
    Profile