This video lecture from Sets, Functions and Groups (F.Sc. First year Mathematics) covers: Question numbers 4-8 of exercise 2.1. In these questions we find two proper subsets of a given set, find is there any set which has no proper subset. Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.