Well online and offline classes both have pros and cons which depends on factors such as resources, your schedule for a day, flexibility.online class include less interaction, technical issue but it is cost effective, flexible.offline class includes pros such as direct interaction, structure environment, cons such as fixed schedule, travel time etc.
NATA mein bahut basic maths aata hai aaj kal. NATA ka syllabus janne ke liye, watch this video: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-O_lK04t75V0.html