Hello Aman, 

To prepare for taking admission in ipm I would suggest you books that are easily available in market and would help you to achieve your goal. The names of books are as follows :

• A NEW APPROACH TO REASONING verbal and non verbal. 
• HOW TO CRACK TEST OF REASONING. 
• A MODERN APPROACH TO Verbal and Non Verbal REASONING 

Please explain about QAT (maths) as I am not able to understand about it. 

All the best!