I have a 3 years of work experience and my profile is (72/69/82). How difficult is it going to be, to get into ISB, Hyderabad? If I score 720+ in GMAT.

Although your 12-class percentage is on the weaker side, ISB Hyderabad still can give you a call as it is not very rigid on the percentage. However, to compensate for your poor academics, you must preferably score 730+ in the GMAT and have an overall strong profile. Other than that the company where you worked and your roles and responsibilities there also impacts your profile. You have to perform excellently in the interview to make it into college.

The major shortcoming in taking frequent GMAT is that every GMAT costs around INR 18000 but a CAT just costs 2000. So you have to crack GMAT with the minimum possible attempts to save money. Another option is to seek assistance from an ISB alumnus at the time of application and, in particular, for the interview.