<p>Hello, I would like to know what the most difficult math sections in the blue book practice tests are. I'm looking to make sure I can nail those problems especially out of all of the tests, so any input would be valued. Thank you -Mike</p>
<p>To get just the most difficult problems, just take the last 5 or so problems from each section; they are ordered by difficulty. Only do that, of course, if you aren't planning on using the practice tests for anything else.</p>