I tried searching this, but to no avail...
Are the essay questions in the back of the book the list of all the potential essay questions they could ask on the real GMAT exam?
Does the list differ a lot from 12th to 13th edition?
GMAT says "The complete list of current Analytical Writing Assessment (AWA) Analysis of an Argument Topics used during the administration of the GMAT exam". So, the answer to your first question is yes. The list does not differ a lot from OG12
to OG13, in fact all the topics that I compared between the two guides were the same.
You can download the current list from mba.com also, here is the link. http://www.mba.com/the-gmat/test-struct ... ction.aspx
You can also visit the post below; it contains responses to all the topics from the AWA list.awa-compilations-109-analysis-of-argument-essays-86274.html
This list is pretty exhaustive; I suggest that you learn the basis structure of the essays and practice the same on a few. There is no need to do each and every topic from the list. All the best!!
Hope this helps,
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