This video lecture from Matrices and Determinants (F.Sc. second year Mathematics) covers: Question numbers 7-10 of exercise 3.4. In these questions we prove the given matrix as skew-symmetric and find the inverse of given matrix by using row and column operations. 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.