Science

M.Sc computer science total fees for Bharathiar University is Rs. 36310 and yearly fees is Rs. 16510.

Click the link below:
Once you click the link below, check for Download- UPCATET Prep Guides, then click download. https://www.shiksha.com/science/upcatet-exam-question-papers.

Mathematics comes in the 1st semester of your MBA programme. It covers a very basic part of it. You can easily get that in your class sessions.
2ns semester statistics comes into play which is new for everybody, those who have studied earlier they also didn't get any upper advantage because its diff

Yes, definitely you can directly apply for the second year of MCA.

In physics, go through the derivations and in organic chemistry by Navneet which is a good book for reactions and for the maths do the solved examples.

The eligibility criteria for M.Sc in Mathematics at Bangalore University is UG with 40% marks aggregate of all subjects and at least 50% marks in mathematics (cognate subject) at the degree level are eligible.
Hence BE ECE graduates are not eligible for this program.

Yes, anyone studying physics, maths, and computer science can join BCA in their graduation, but at least 55% marks are needed for that.

I won't suggest you to leave any course in the middle because it will affect your education and it also will have a bar affect on your education profile thus its better to wait until you complete it and then apply for jobs.

Please check this link www.amity.edu/aift/A43454.asp
I hope it helps.
All the very best for your future.