What's the best resource for improving your GMAT mathamatical ability?
>> Standard GMAT books are sufficient to improve your GMAT Math's score.
Right now I've been using McGraw-Hill's GMAT for math.
>> For basic its ok..but don't spend ample time on learning Math's concepts.
>>
Best material for GMAT preparation. Understand questions types and tricks.
>> but since I am short in time I would like to know which one is best.
Official Guide and GMAT prep test are best for you. Don't spend ample time on Kaplan, make your target to complete it than switch to OG.
Regards,
Farooq