A bag contains 1 red ball, 1 green ball, 2 blue balls and 1 black ball. What is the probability of getting a white ball?
A bag contains red, blue and green balls. It is twice as likely to pick a blue ball as compared to a red ball, and it is thrice as likely to pick a green ball as compared to a red ball. What is the probability of picking a green ball?
Two balls are drawn at random from a bag containing 1 red, 4 green and 2 blue balls. What is the probability that none of the balls drawn is blue?