Cookies are also used to remember which page of the book you last viewed, so that when you revisit the site you automatically return to the last page you visited.
You have simply used 5 and 2 as factors. Factors and powers are two separate ideas. Please read the discussion of powers again. You will find that the “2nd power of five” is just another way of saying “52” or “5 used as a factor twice.”
Return to Page 29, study the material, and select another answer.