IIM

Aptitude questions including Data interpretation, Quantz, verbal and reasoning are there in IIM IPM.

You can take IPMAT exam after class 12th for IIM-Indore or complete the graduation from any university and start preparing for CAT exam from day one of graduation with full concentration.
Hope it will help you.

No,
They calculate the average of all the years.

No, you have to appear for CAT that is a basic requirement and all the other processes after that.

IIM prefers GMAT for executive MBA but some of them like IIM Bangalore also prefers GRE. So, you must opt for GMAT if you are not targeting any particular IIM which also considers GRE.

Hello,
Nowadays, competition is really tough so cracking any exam is really going to be tough. Both the exams have different requirements, think about your background and which exam is suitable for you because in UPSC exam, you have a deep knowledge of one subject with at least good knowledge of all the subjects.

You should go for CAT examination because IIMs require CAT score for admissions.

Dear Manish,
Please share your CAT and MAT scores as many B-Schools as their own set criteria and according to your score, you can apply. You can check below mentioned colleges :-
JIMS Rohini sec-5
LBS
BIMTECH
GIM - GOA
All the best.

Only CAT score matters. Your graduation marks will only help you during the PI. It doesn't matter from which college you have done your graduation. Getting a call requires a high score in CAT. For the final selection, your previous academics, experience and essay writing ability is also considered.