question_answer

A bag contains 4 white balls, 6 red balls, 7 black balls and 3 blue balls. One ball is drawn at random from the bag. What is the probability that the ball drawn is neither white nor black?

A)  \[\frac{11}{20}\]                                  

B)  \[\frac{9}{20}\]

C)  \[\frac{1}{2}\]                         

D)  \[\frac{13}{20}\]

E)  None of these