(iii) There are 3 white balls
So, the number of favourable outcomes = 3
Thus, P(getting a white ball) = 3/10 = 3/10
(iv) There are 3 + 5 = 8 balls which are not red
So, the number of favourable outcomes = 8
Thus, P(getting a white ball) = 8/10 = 4/5