Hi rohitsood43,
Most Test Takers use a variety of study materials as they prepare for the GMAT. While there's likely no 'harm' in using slightly older books, you will likely end up needing MORE than just those materials to hit your Goal Score. Before I can offer you any additional advice, it would help if you could provide a bit more information on how you've been studying and your goals:
Studies:
1) How long have you studied?
2) How have you scored on each of your CATs (including the Quant and Verbal Scaled Scores for each)?
Goals:
3) What is your goal score?
4) What is your exact Test Date?
5) When are you planning to apply to Business School?
6) What Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich