Maharashtra

Unfortunately, DTE Maharashtra removed MAT exam from the list of exams whose scores will be accepted for admissions. So colleges such as JBIMS, SIMSREE, SIMSR, Welingkar, PUMBA won't be accepting MAT scores for their admissions from this academic year. Will recommend you to appear for Maharashtra MBA CET.
All the best.

The most reputed colleges in Bangalore and Pune like the IISC and IISER admit students through the JAM entrance exam. Many private colleges have their own entrance exams. Other good colleges in Mumbai, like St. Xavier's admits students purely on merit basis but with a high cut off.

It is not possible to get admission in COEP with 88.20% marks for open category. If you are in any backward class, then there is some probability of getting admission.

You can apply for exams like CAT, CMAT, ATMA or any MBA entrance exam for getting admission for an MBA course. Select the good college first, where you wan to do an MBA and check on the website, which exam does that college accept for getting admission, etc. As you are from Maharashtra, you can also give MAH MBA/MS CET and get admission in most of the MBA institutes in Maharashtra. But now for the admission in 2018, almost all the exams are over except MAH MBA/MS CET 2018. If you are planning to do in 2019, start preparing for these exams.