From a bag containing 4 white and 5 black balls 3 are drawn at random. The odds against these being all black balls is

From a bag containing 4 white and 5 black balls a man draws 3 at random, what are the odds against these being all black?

A bag contains 5 white and 7 black balls and a man draws 4 balls at random. The odds against these being all black is

An urn contains 5 white and 3 black balls and 4 balls are drawn at random.The probability of getting white and black balls equal in number is-

A bag contains 4 white and 5 black balls. A ball is drawn at random from the bag. Find the probability that the ball drawn is white.

From a bag containg 5 white, 7 red and 4 black ball a man draws 3 random, find the probability of being all white .

From a bag containing 5 white, 3 black and 2 red balls, two balls are drawn at random. Find the probability that both are white.

A bag contains 6 white and 4 black balls.Two balls are drawn at random.The probability that they are of the same color is

A bag contains w white and b black balls. A ball is drawn at random and put back in the bag with k additional balls of the same colour. A ball is again drawn at random from the bag. The probability that it is black is