A bag contains 8 red, 2 black and 7 white balls. One ball is drawn at random. The probability that the ball drawn is not white is
Total number of balls = No. of red balls + No. of black balls + No. of white balls = 17 Number of white balls = 7 ⇒ P (getting white ball) = 717 ⇒ P (not white)=1 - P(getting white balls) = 1−717 =1017
A bag contains 6 black, 7 red and 2 white balls. A ball is drawn from the bag at random. Find the probability that the ball drawn is black or white.