Hi..I have browsed a few threads on the topic of starting GMAT prep with which book and the most likely answer seems to be
OG 11.
But i have a question here...do we need to do the diagnostic test first before proceeding with the prep to have an assessment of our calibre??
The reason why i'm asking this question is, i'm in IT industry for around 3 years and have not touched maths since then..so will it be wise enough to go for test with out brushing the fundamentals or do i need to brush my fundamentals before going into the test?
Any help would be greatly appreciated! Thanks!