PPSC Past Paper Sub inspector Punjab Police (Service Quota) 2019 Solved MCQs, Geography MCQs, PPSC Solved Past Papers MCQsTaekwondo is a popular form of Martial Arts. From which country did Taekwondo originate?A. Korea B. Japan C. China D. Malaysia A TV is purchased at Rs. 5000 and sold at Rs. 4000, find the lost percent?Why is the Ozone important for mankind?