question_answer

In a box, there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither red nor green?

A)  \[\frac{2}{3}\]                         

B)  \[\frac{3}{4}\]

C)  \[\frac{7}{19}\]                        

D)  \[\frac{7}{21}\]

E)  None of these