Colleges in West Bengal

I think, this question is for the Presidency in Kolkata? I am from Presidency University in Bangalore. If it is for the Bangalore one then yes, Presidency University, Bangalore does offer B.Tech in 10 departments and BBA LL.B.Com LL.B. And MBA in its course.

The salary ranges from 15k to 30k monthly.

Yes, you can take the course. Students of science stream can go with arts at graduation also.
All the best.

Yes, you can as the admission will be based on the graduation score. For admission you must have completed Graduation degree from any recognized University and must have studied at least 300 marks in English and passed successfully are eligible.

There is no entrance been conducted for admission in M.A in mathematics. For admission in this course, you need to have passed mandatory course B.Sc (Mathematics).

Yes, you can do if your marks are more than 55 in graduation.

98.88 percentile for MBA in Calicut.
All the best for your bright future!

IEM takes admission through WBJEE and JEE Mains and not through any other joint entrance examination. Your rank should be between 700 to 800 (GMR) to get into IEM. IEM offers 12 seats for mechanical students through JELET. Usually, if seats get vacated at the end of the first year and there will be a chance of admission through JELET. In Techno India Salt Lake City for lateral entries eligibility criteria is that a candidate should have minimum 60% aggregate in Diploma in engineering.
Hope this helps.

There are some chances to get admission, so you can try.
Good Luck!