<p>how do we come to know which section exactly is the experimental section on the SAT?</p>
<p>The easiest way to tell is by the number of questions. For example, the Critical Reading Section has 67 questions. Normally, there would be two 24 question sections and a 19 question section which adds up to 67. But the experimental section might either have 23 or 25 questions which, if added to the 24 question section and the 19 question section, would not equal 67 questions.</p>