My background is medical so I'm extremely weak in math but I want to focus on main math's chapters or topics so tell me topics name where majority of questions come from in cat exam

first cover the arithmetic part all the chapters- percentage, profit and loss, ratios, time distance, then algebra and number system

I am also from medical stream I am also having difficulty in math glad to see someone from my stream..

Your priority should be arithmetic, algebra and then if possible geometry

Yes Abhishek, Arithmetic covers the major chunk of questions. Typing error it should be Arithmetic, not Algebra.

Algebra and Geometry.