A bag contains 6 red, 8 black and 4 white balls. A ball is drawn at random. What is the probability that ball drawn is not black?
Total numbers of red balls = 6
Number of black balls = 8
Number of white balls = 4
Total number of Non red balls = 6 + 8 + 4 = 18
Number of non black balls are = 6 + 4 = 10
Probability of getting a non black ball is = 
9