Completed HSC and then Direct second year Diploma, will my HSC score be considered or Diploma score for AR score?

CAT and ATMA are both MBA entrance exams. But, historically, the difficulty level of CAT exam is higher as compared to that of ATMA exam. 

IIM Calcutta offers a large diversity of courses to students in Management field. IIM Calcutta admissions are held on the basis of entrance tests. Students seeking course admissions must clear their previous qualifying examination and appear for any of the prescribed entrance exams such as CAT, amon

CAT DILR preparation is completely based on practice papers and mock tests. You should obtain recommended CAT DILR sample papers and mock test series. Make sure to cover all types of question. Also practice DILR questions of past year with the help of CAT question papers.

Yes, you can crack CAT through self study but it will require a lot of discipline and consistency on daily basis. You will need the most recommended books, best mock test series and online practice sessions. Join YouTube channels for online tutorial. Give yourself 9 months and study for 8 hours dail

While it is advised to dedicate at least 9 months to CAT preparation, six months of dedicated study can also help you crack the exam. You will need daily, weekly and monthly plan for syllabus coverage. Practice a good number of mock tests and study for about 8 hours daily.