MMS

In SIES, the cut-off for MMS is more than 98 percentile, so chances of getting SIES are very low.
I don't have any idea about PUMBA.
Just go through the last year's cut-off of colleges and apply for CAP round.
Best of luck.

Thakur is good, but secure your seats in the CAP rounds.

Yeah, you can try for the same as you rank and percentile are good enough to get top MBA MMS colleges.

Please check for your eligibility to pursue an MS from the criteria mentioned below:
Master of Management Studies:
Eligibility:
Candidates should have passed Bachelor's degree from a recognised college to apply for the admission. Candidates should have scored a minimum of 45% of aggregate marks in graduation to apply for the admission. Candidates must have passed in Common Entrance Test which is conducted by the Competent Authorities designated by the State Government as the sole authority calling for applications and effecting admissions by the Common Entrance Test.
Regards.

You can get good marks only through hard work. You can consult the teachers and solve the previous year questions paper, so that you can have better idea and technique of writing. Don't worry. Keep smiling and have good luck.

Hi,
For XIMR MS - minority seats; you have to fill the form of DTE and then participate the process by DtTE- MS.
All the best!

Hi Amol;
You can do six-sigma course for the operations. KPMG and many other organisations provides it. For fresher, Green belt is sufficient.

Hi Vignesh,
To take marketing or operations is solely depends on your personal interest. In first year of MS; We have all subjects marketing, HR, ops. etc. So, you can also decide which specialisation to take at the end of first year.
All the best.

Sasmiras Institute of Management Studies and Research is good for marketing management. It is a highly reputed college and it is good for other courses too.