In a bag there were'3 white balls and 5 black balls.From this one ball is taken,then :What is the probability of being white ball?

In a bag there were'3 white balls and 5 black balls.From this one ball is taken,then :What is the probability of being black ball?

From 4 red balls, 2 white, balls and 4 black balls, four balls are selected. Find the probability of getting 2 red balls

12 balls are in a box. 5 among them are blue and others are black. Without loọking into the box, one ball is taken a) Find the probability of getting a blue ball? b) After putting one blue ball and one black ball into the basket, a ball is taken. Is the probability of getting a blue ball increases or decreases? Justify your answer.

From a box containing some red balls and some blue balls the probability of getting a red ball is a/b . What is the probability of getting a blue ball?.

One box contains 7 red balls and 5 blue balls. Another box contains 5 yellow and 9 green balls. What is the probability of getting red balls from the first box?

One box contains 7 red balls and 5 blue balls. Another box contains 5 yellow and 9 green balls. What is the probability of getting blue balls from the first box?

A bag contains 4 white and 2 black balls.Another bag contains 3 white and 5 black balls.If one ball is drawn from each bag.Find the probability that One is white and one is black.

One box contains 7 red balls and 5 blue balls. Another box contains 5 yellow and 9 green balls. What is the probability of getting green balls from the second box?

One box contains 7 red balls and 5 blue balls. Another box contains 5 yellow and 9 green balls. What is the probability of getting yellow balls from the second box?