An urn contains r red balls and b black balls. If the probability of getting two red balls in first two draws (without replacement) is `1/2` then value of r can be

An urn contains r red balls and b black balls. Column I, Column II If the probability of getting two red balls in first two draws (without replacement) is 1/2, then value of r can be, p. 10 If the probability of getting two red ball in first two draws (without replacement) is 1/2 and b is an even number, then r can be, q. 3 If the probability of getting exactly two red balls in four draws (with replacement) from the urn is 3/8 and b=10 ,t h e nr can be, r. 8 If the probability of getting exactly n red ball in 2n draw (with replacement) is equal to probability of getting exactly n black balls in 2n draws (with replacement), then the ratio r//b can be, s. 2

An urn contains 4 white and 3 red balls. Find the probability distribution of the number of red balls in three draws, with replacement from an urn.

An urn contains 4 white and 3 red balls. Find the probability distribution of the number of red balls in three draws, with replacement from an urn.

from a bag containing 4 red and 2 black balls, two balls are drawn. the probability of getting two black balls is:

A bag contains 4 red and 4 black balls, another bag contains 2 red and 6 black balls. One of the two bags is selected at random and two balls are drawn at random without replacement from the bag and are found to be both red. Find the probability that the balls are drawn from the first bag.

A bag contains 4 red and 4 black balls,another bag contains 2 red and 6 black balls.One of the two bags is selected at random and two balls are drawn at random without replacement from the bag and are found to be both red.Find the probability that the balls are drawn from the first bag.

An urn contains 12 red balls and 12 green balls. Suppose two balls are drawn one after another without replacement . Find the probability that the second ball drawn is green given that the first ball drawn is red.

A bag contains b blue balls and r red balls. If two balls are drawn at random, the probability of drawing two red balls is five times the probability of drawing two blue balls. Furthermore, the probability of drawing one ball of each color is six times the probability of drawing two blue balls. Then b+r=9 b. b r=18 c. |b-r|=4 d. b//r=2