(i) We know that the bag contains lemon flavoured candies only. So, the event that Malini will take out an orange flavoured candy is an impossible event.
Thus, the probability of impossible event is 0
P(an orange flavoured candy) = 0
(ii) As the bag contains lemon flavoured candies only. Then, the event that Malini will take out a lemon flavoured candy is sure event. Thus, the probability of sure event is 1.
P(a lemon flavoured candy) = 1