This video lecture from Sets, Functions and Groups (F.Sc. First year Mathematics) covers: Question numbers 1-2 of exercise 2.3. In these questions we verify the commutative property of union and intersection, associativity of union and intersection, distributivity of union over intersection, distributivity of intersection over union for the given pair of sets. 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.