What is the probability of drawing one white ball from a bag containing 6 red, 8 green and 10 black balls?

An urn contains 4 red and 7 black balls. Two balls are drawn at random with replacement. Find the probability of getting (a) 2 red balls (b) 2 black balls (c ) one red ball and one black ball.

A bag contains 5 red balls and some blue balls. If the probability of drawing a blue ball is double that of a red ball, determine the number of blue balls in the bag.

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 (a) b+r=9 (b) b r=18 (c) |b-r|=4 (d) b//r=2

A bag contains an assortment of blue and 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 time the probability of drawing two blue balls. The number of red and blue balls in the bag is a. 6,3 b. 3,6 c. 2,7 d. none of these

There are 3 bags which are known to contain 2 white and 3 black, 4 white and 1 black, and 3 white and 7 black ball, respectively. A ball is drawn at random from one of the bags and found to the black ball. Then the probability that it was drawn from the bag containing the most black ball is 7//15 b. 5//19 c. 3//4 d. none of these

A die is thrown if it shows a six, we draw ball from is bag containing 2 black balls and 6 white balls. If it does not show a six then we toss a coin. Then the number of event points in the sample space of this experiment is -

An urn contains 7 white and 3 red balls two balls are drawn together at random from this urn compute the probability that neither of them is white find also the probability of getting one white and one red ball hecne compute the expecteed numbr of white balls

Assuming the balls to be identical except for difference in colours , the number of ways in which one or more balls can be selected from 10 white , 9 green and 7 black balls is -

A person draws out two balls successively from a bag containing 6 red and 4 white balls. The probability that at least one of them will be red is

Two balls are drawn at random from a bag containing 6 white and 4 black balls. Find the chance that one is white and the other is black?