PLEASE SUGGEST ME A BETTER BOOK FOR MAT/MBA QUALIFICATION ...ANY GUD TIPS FOR QUANTIFYING XAM....

You can go with TIME & Career launcher materials for the preparation of MAT & other MBA entrance exams which is good & very helpful or you can visit the website given below.
MBA Entrance exam Material

You can follow given below tips.

Remain updated with the current syllabus of MAT.

Prepare a proper time table and divide your time across different sections.

Learn short cuts, memory methods and tricks for Math & reasoning.

Cover wide variety of topics and prepare your own notes.

Prepare your strategy of answering most number of questions in limited time.

Solve Mock test & previous year papers as much as you can it will be very helpful for you.

All the Best!