Home
Class 12
MATHS
A bag contains 2 black and 1 green balls...

A bag contains 2 black and 1 green balls. One ball is drawn at random and then put back in the box after noting its colour. The process repeated again. Let X denotes the number of green balls recorded in the two draws, describe X.

Text Solution

Verified by Experts

The correct Answer is:
2
Promotional Banner

Topper's Solved these Questions

  • PROBABILITY

    ARIHANT PUBLICATION|Exercise PART V (SAMPLE QUESTION )|13 Videos

  • PROBABILITY

    ARIHANT PUBLICATION|Exercise PART I (QUESTION FOR PRACTICE ) VERY SHORT ANSWER TYPE QUESTIONS|16 Videos

  • PROBABILITY

    ARIHANT PUBLICATION|Exercise PART III (SAMPLE QUESTION )|4 Videos

  • MATRICES

    ARIHANT PUBLICATION|Exercise CHAPTER PRACTICE (Very Short Answer Type Questions) |56 Videos

  • QUESTION PAPER 2018

    ARIHANT PUBLICATION|Exercise SHORT ANSWER TYPE QUESTIONS (ANSWER ANY THREE QUESTIONS)|38 Videos

Similar Questions

Explore conceptually related problems

An urn contains 2 white and 2 black balls. A ball is drawn at random, If it is white, it is not replaced into the urn. Otherwise, it is replaced with another ball of the same colour. The process is repeated. Find the probability that the third ball drawn is black.

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 does not depend on k

An urn contains 10 black and 5 white balls. Two balls are drawn from the urn one after the other without replacement. What is the probability that both drawn balls are black?

A box contains 3 orange balls, 3 green balls and 2 blue balls. Three balls are drawn at random from the box without replacement. Find the probability of drawing 2 green balls and one blue ball.

A bag A contains 2 white and 3 red balls and another bag B contains 4 white and 5 red balls. One ball is drawn at random from a bag chosen at random and it is found to be red. Find the probability that it was drawn from bag B .

A bag contains 5 red, 7 green and 4 white balls. 3 balls are drawn one after another without replacement. Find the probability that out of 3 balls, one is white and 2 is green.

Bag I contains 3 red and 4 black balls and bag II contains 5 red and 6 black balls. One ball is drawn at random from one of the bags and is found to be red. Find the probability that it was drawn from bag Il.

An urn contains 4 white and 3 red balls. Let X be the number of red balls in a random draw of 3 balls. Find the mean and variance of X.