This video lecture from Mathematics Class 9Th covers topic of Closure Law of Rational Numbers. In this Video Lecture Instructor has explained in details about Closure Law of Rational Numbers. The concept of Closure Law of Rational Numbers has been illustrated with more than one examples. Instructor have tried to cover all aspects about Closure Law of Rational Numbers. Instructor has focused on conceptional learning but at the same time teaching is geared towards exam preparation too. Closure Law of Rational Numbers is explained in Urdu language for better comprehension , Most of the text and technical terms are in English, however, the explanation of the topic is in Urdu. This Video Lecture is a supplementary resource for better understanding of Closure Law of Rational Numbers. Maktab.pk Provide quality instructional material (video Lectures) for F.SC. & most of the academic courses in Pakistan with special focus on scientific subjects and have largest collection of Video lectures in Urdu Language. Long term scope of this program is to cover most of the academic classes and courses offered in Pakistan from Class 1 to bachelor degree level. Focus and preference will be for the scientific subjects, as quality content in these areas is scarce, especially in Urdu language. 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.