"Bryon here helps people prepare for tests of advanced numerical skills that are used extensively to weed out candidates for management and graduate jobs and for places in postgraduate courses.  The main tests are the ABLE Financial Appraisal, GMAT, SHL Graduate Battery, and McKinsey Problem Solving, but they are similar enough that he takes them as a group rather than distinguishing between them.  The nine sample tests cover accounting and business comprehension, geometry and further quantitative operations, advanced numeracy, and data interpretation.  He provides answers and explanations, and a key for interpreting scores." -- Book News