Question

A bag contains 18 balls out of which x balls are red. a) If one ball is drawn at random from the bag,what is the probability that it is not
red ? b) If two more red balls are put in the bag,the probability of drawing a red ball will be 9/8 times than that in part (a). Find x​

Answer 1

First is 18-x/18 and second is x =8