GMAT Official Guide 2020 is the definitive study guide from Graduate Management Admission Council, the makers of the GMAT exam. It contains over 1,000 real GMAT questions from past exams with detailed answer explanations that provide insight on how to approach each question from the prospective of the test maker. Youll also get access to the GMAT Online Question Bank, customizable study tools, and a new mobile app for practicing on the go even when youre not connected to the internet.