Maharashtra

You can join through management quota. Since you are a Diploma student, you cannot get through common entrance test of their state. For more information, contact Examination Authority or the specific college you want to get into.

Marks does not matter in competitive examinations. You have to strongly focused on upcoming competitive exams like civil services, CDS and other government exams. Just start your preparation and attend the maximum number of exams. Each attended exam will help you with the next one.
Best of luck.

You cannot join merchant navy directly after 10th. You have to complete your 12th with sufficient marks also appear for the entrance exams conducted by various institute. You have to take Science side in 12th in which maths is compulsory.

Fee of the Sinhgad College of Commerce in Pune is 10500 for 3 years but you have apply for college scholarships.

Hey,
Symbiosis institute of management studies is the best among all the other options you have.
Good luck.

As per College website, the eligibility is-
Graduate from a recognized University with Mathematics or Statistics as one of the subjects at 10+2 level or at graduation and minimum of 50% aggregate marks for open category and 45% for reserved category.

Yes, you can. BCA from SMU through distance is properly recognized and accepted by all universities for Masters programme.

Yes, you can. Also, you are eligible for lateral entry too. You should be able to get admission in 2nd year directly after ITI.

Hi Krishna!
You can view the fee structure by visiting the official website http://www.mitid.edu.in/admissions-fee-structure.html.

Dear, There are many good Institute for studying B.Ed. At Navi Mumbai. Among those Pillai Institute of Education and Research is one of the Top which is affiliated to University of Mumbai and approved by N. C. T. E. It has NAAC A accreditation. Best wishes.