A bag contains 7 white and 9 black balls.Two balls are drawn in succession at random.What is the probability that one of them is white and the other black?
Total probability=16C2=120
No of ways of drawing a white ball=7C1=7
No of ways of drawing a black ball=9C1=9
No of ways of drawing a white ball and a black ball=7*9=63
Probability=63/120=21/40
A bag contains 2 red,3 green and 2 blue balls,two balls are drawn at random.What is the probability that none of the drawn balls are blue?
A bag contains 6 white and 4 red balls.Three balls are drawn at random.What is the probability that one ball is red and other two are white?
A box contain 4 black balls,3 red balls and 5 green balls.2 balls are drawn from the box at random.Find the probability that balls are of the same color?
A bag contains 6 black and 8 white balls.One ball is drawn at random.What is the probability that ball drawn iswhite?
A bag contains 3 red,5 yellow and 4 green balls.Three balls are drawn randomly.What is theprobability that balls drawn contain exactly 2 green balls?