Though the math on the Exam is high-school level, 
        certain concepts are more difficult than others. The test makers know which 
        topics give test-takers the most trouble (that’s what those experimental 
        questions are for). If you prove that you can handle the basics (by getting 
        most of the early questions right), you’ll start to see content that’s 
        noticeably more difficult than what came before.  
       In Data Sufficiency you’ll see difficult problems 
        on exponents and roots, factors and multiples, more complex symbols, long 
        word problems (sometimes with figures), more complex geometry, and tougher 
        algebra.
      
     
      
       The reason these topics receive so much coverage 
        is that they tend to be a little more abstract and/or have lots of rules 
        with exceptions that might slip your mind. Remember, part of what’s being 
        tested at this level is your ability to consider a problem from more than 
        one angle. So every time you get a tricky question involving number properties 
        and/or algebra, for example, you need to ask yourself whether there are 
        any relevant exceptions to whatever mathematical rules apply to the situation. 
        Keeping all this in mind, let’s take a look at a very tough exponents 
        question… .
  
        
        
        Next to display next topic in the chapter.
    
    
Test Prep Lessons With Video Lessons and Explained MCQ