HI,

 MAT is the easiest exam to crack as MAT is conducted two times in a year and available in both online and offline mode

These exam entirely depends on your intellect. The difficulty level of the exam is average and you should have scored the required aggregate marks to appear for it.

IPU MBA entrance is also easy as compared to the ssc, other government level exams or any other entrance. 

You can refer to good books of MBA Entrance Exam of various publications like Arihant and land yourself with good rank. Adding on to this, another aspect which you need to take care of is keeping yourself updated with current affairs and practice of maths and logical reasoning.

Hope this serves your purpose.

All the Best!