Dear Riya According to DU JAT exam syllabus 

Exam pattern - Quantitative aptitude 25 question, Reasoning 25, General English 25, Business and general awareness 25 questions.

You have to prepare the whole topic because every topic is important you can predict which one is most important or which one is less important. From 11 and 12 maths most asked topic is Integration and Differentiation and P&C.Try to cover whole topics which are mentioned in the syllabus.

All the best dear Riya

Hii Riya

It includes higher mathematics questions of class 12th mostly. You can apply and appear for the delhi university joint ability test conducted by the university of delhi . You have to fill up the application form which come around in the month of may and the entrance exam takes place in the month of June. By clearing this exam you can take up any course BBE/BMS/BFIA . There are number of colleges you can choose from. You have to look up the eligibility criteria too and should have maths as a subject in class 12th .  Topics like Relation function, probablility, vector analysis,differentation are of atmost importance

You can visit this link by our experts - https://bschool.careers360.com/exams/du-jat

Hope it helps 

Thanks