Hi arpit121,
If you truly did no studying before taking this Official GMAT, then a640 is a fantastic initial CAT score (the Average Score on the Official GMAT hovers around 550 most years). With a Score Goal of 740+ though, you will almost certainly need to hone BOTH your Quant and Verbal skills. Many GMATers spend 3 months (or more) of consistent study time before they hit their 'peak' scores, so if you are planning to take the GMAT in early April, then that will be just a bit more than 2 months of study time (and that may or may not be enough time for you to get to the point that you can consistently score at that higher level).
Before I can offer you the specific advice that you’re looking for, it would help if you could provide a bit more information on your timeline and your goals:
1) Have you taken ANY practice CATs/mocks yet? If so, then when - and how did you score on EACH (including the Quant and Verbal Scaled Scores for EACH)?
2) Did you take your 1st GMAT at a Test Center or through the At-home option (and are you planning to do the same for your 2nd attempt?)?
3) Going forward, how many hours do you think you can consistently study each week?
4) When are you planning to apply to Business School and what Schools are you planning to apply to?
If you took your 1st Official GMAT at a Test Center, then you might also choose to purchase the Enhanced Score Report. While the ESR doesn’t provide a lot of information, there are usually a few data points that we can use to define what went wrong on Test Day (and what you should work on to score higher). If you purchase the ESR, then I'll be happy to analyze it for you.
GMAT assassins aren't born, they're made,
Rich
Contact Rich at: [email protected]