CBSE 12th

I am afraid you will not. Probably you should drop the year and try to meet the eligibility criteria next year.

Following is some relevant information mentioned-
1. National level entrances like JEE, BITSAT, etc.
2. State level entrances like WBJEE, OJEE, etc.
3. Management quota or direct admission.
You have to give all the 3 types of entrance and after the ranks you can decide which college you want to go for.

You have to clear entrance exams like CAT or GMAT to get admission in a good B-school. So prepare yourself for the exam.

Just go for the maximum. But honestly, 98+ percentile can give you call for all IIMs, given that the profile is good.

Eligibility:
Candidate must have passed 10th standard from a recognized board.
or
Candidate must have passed 10+2 from a recognized board.
or
Candidate must have passed from I.T.I / NCTVT.
Admission Process
Interested candidates can apply directly to the college.
https://www.shiksha.com/college/government-polytechnic-bandra-east-mumbai-24094/admission

You have chances of getting IIMs. Some of the IIMs are not that much famous as other colleges are like IIFT, Symbiosis, JBIMS so you can get IIMs but not IIM-A,B,C you can get some better colleges than other IIMs.

Hi, Candidates are eligible to apply for NCHMCT JEE 2018 if they cleared their 10+2 or its equivalent examination with English as one of the subjects studied. Apart from this, candidates will meet the eligibility criteria for NCHMCT JEE only if they have secured passing marks in English (core/elective/functional) in their qualifying examination. https://www.shiksha.com/hospitality-travel/hotel-hospitality-management/exams/nchmct-jee.

Yes, you can get admission as you are eligible for admission. -
Please visit the link to keep yourself updated: https://davchd.ac.in/.

Yes, you can. For more details, please visit the campus.

Hi Tapan!
Unfortunately No. You cannot apply for M.Sc in Mathematics if you have not pursued a bachelors degree.