This video lecture from Sets, Functions and Groups (F.Sc. First year Mathematics) covers: detailed conceptual discussion on subsets and their types (proper and improper subsets), power sets and formula for calculating no. of elements in the power set of a given set. 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.