b' About the Book: GMAT Official Guide Quantitative Review 2020: Book + Online\n\nThoroughly prepare for the Quantitative component of the GMAT exam with 2020\nedition of the Quantitative Guide, complete with 319 actual questions from\nprevious GMAT exams as well as answer explanations. This edition includes\nexclusive access to the online question bank that allows you to create practice\ntests from the over 319 retired GMAC questions featured in the book, as well as\nvideos from real test takers and GMAC staff who share insight and tips on GMAT\npreparation. The Quantitative component now includes a mobile app. The mobile\napp provides access to the test bank '