mra

I TOOK THE gmat yesterday after studying for 6 months. My results as you can see on the title were extremely disappointing 530. I need advice on how to improve my GMAT Score to over 620 Here is a list of all the books I USED: 1.GMAT Official GUIDE 2011 AND 2010 2. Powerscore CRITICAL REASONING 3. Kaplan GMAT MATH workbook 4. CLIFF NOTES MATH REVIEW FOR STANDARDIZED TESTS 5. Kaplan 800 In addition I did the KAPLAN PREP COURSE and went through the books and online material available. Honestly I have not hope left after going through all these books:doh: Any recommendations to improve QUANTITATIVE SECTION? Thanks!