# A bad contains 4 black balls, 6 blue balls, 3 white balls and 5 red balls :

A bad contains 4 black balls, 6 blue balls, 3 white balls and 5 red balls. One ball is drawn from the bag. probability that the ball drawn is black or white

(a) 5/18

(b) 7/18

(c) 4/15

(d) 4/5