For Korean learners - jumpstart your GMAT exam preparations with the official study guide, featuring real GMAT questions The Official Guide for GMAT Review (Korean Edition), 13th Edition provides Korean learners with more than 900 questions to prepare for the GMAT test. Specific to those studying to take the GMAT in Korean test centers, this resource includes a new online study companion, a 100-question diagnostic exam to help focus your test preparation efforts, comprehensive grammar and math review, and helpful tips to help you prepare for the GMAT exam.