Your GMAT score is obviously a critical component of your business school application (although, I’d argue, perhaps not as important as many people make it out to be), and most folks need to invest a significant amount of time in preparing for it. Certain GMAT preparation approaches can work better for some people relative to others.
GMAT & MBA Admissions Blog
One of the more difficult GMAT problem types deals with summing an arithmetic sequence. Problem 157 in the 12th edition Official Guide is an example:
Lots of practice is key when prepping for the GMAT, and an essential part of that practice is taking practice exams that mimic the real test. Here are 7 ways to get the most out of a GMAT practice test: