Maths Spl

Different universities follow different patterns with varying difficulty levels and weightage. In some universities like DU, you do not have entrance exams, but cut off %. Most questions are asked from 12th math, trigonometry, probability, matrices and differentiation, integration etc.

Refer the links:
https://www.iitk.ac.in/dosa/data/Fee-structure-for-1st-sem-2017-18.pdf
https://iitk.ac.in/counsel/new/fees.pdf

Admission to the second year of Diploma is not feasible.

Eligibility criteria for the post-Higher Secondary Certificate (HSC) Diploma course is an HSC pass certificate. You are eligible to seek admission in Diploma course from a Polytechnic. Legally it is permissible to do Diploma and degree simultaneously. You can not pursue two degrees simultaneously from same or different universities. You are advised to evaluate whether you can handle simultaneous studies load of two courses and challenges in case of conflicts in time table, examinations etc.

HI Manisha,
You don't need to appear for any entrance exam. Although, different colleges and universities conduct their own admission tests for B.Com.

CA CS CMA, BCA BBA BMS, B.Com (Hons).
All these are available for you. Choose according to your strength and interest areas.

It totally depends on your interest. If you want to have a career in management then opt for BBA, otherwise you can go for BCA.

Commerce students are not eligible for B.Sc.

https://www.shiksha.com/university/Andhra-university-Visakhapatnam/exams/aucet/syllabus.

Admission to this course is through counseling based on the rank obtained in Andhra University Common Entrance Test (AUCET). Eligible candidates need to appear for Andhra University Common Entrance Test (AUCET) to be eligibile to apply to this course. Check accordingly.