How a ca can pass cs professional exam in 20 days?

Professional exams are not the one night preparation exams.
But start with asked questions like do Scanners completely this will help you pass with good marks easily.

True said professional exams are not a game to play.You have to dedicate all ur efforts & time to clear it.

But in a short time u can go for preparing past exams ques & sure topics. Conceptual clarity also works hrre.
As u passed CA focus on subjects not in CA course & then work on subjects u already have knowledge about.