Cracking the GRE, 2013 Edition (Graduate School Test Preparation)
If you need to know it, it€s in this book.
Cracking the GRE, 2013 Edition has everything you need to know to master Verbal Reasoning, Quantitative Reasoning, and the Essay sections of the GRE, and includes:
   € Access to 4 full-length practice tests
   € Practice questions with detailed explanations for every question
   € Key strategies for solving Text Completions, Sentence Equivalence, Numeric Entry, Quantitative Comparisons, and more
   € Thorough review of all GRE topics, including everything on the revised GRE that debuted in fall 2011
   € Online video tutorials offering in-depth exploration of key strategies and concepts