A bag contains 6 red, 4 black and some white balls.
(i) Find the number of white balls in the bag if the probability of drawing a white ball is `1/3`.
(ii) How many red balls should be removed from the bag for the probability of drawing a white ball to be `1/2`?

A bag contains 5 black and 3 white balls. Two balls are drawn at random. Find the probability of drawing: (i) 2 black balls (ii) 2 white balls.

A bag contains 20 balls out of which x balls are white.If one ball is drawn at random,the probability drawing a white ball is y.Now place this ball and 10 more white balls in the bag.Now if a ball is drawn from the bag,the probability of drawing the white ball is 2y. Find x.

There are 4 white and 3 black balls in a bag. Find the probability of drawing 2 white ball one by one without replacement.

A bag contains 6 white, 5 black and 4 red balls. Find the probability of getting either a white or a black ball in a single draw.

A bag contains 6 red,3 black and 6 white balls.A ball is selected at random from the bag.Find the probability that the selected ball is : (a) red or black (b) not black

A bag contains 6 black and 8 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?

A bag contains 4 white balls and some red balls.If the probability of drawing a white ball from the bag is (2)/(5), find the number of red balls in the bag.

A bag contains 6 red, 5 black and 4 white balls. A ball is drawn from the bag at random. Find the probability that the ball drawn is : (i) white (ii) red (iii) not black (iv) red or white.