The Ultimate EU Test Book Assistants 2020 is specially designed for candidates preparing for European Personnel Selection office (EPSO) competitions at Assistant (AST and SC) level. It is relevant to all Assistant-level EPSO open competitions and CAST selections. The 2020 edition is the biggest Assistants edition ever and full of strategies, advice and practice exercises. The focus is on the computer-based multiple choice question tests which prove an obstacle to so many. Included are methodologies, warm-up exercises applying the methodologies step by step, and hundreds of practice questions with answer explanations showing shortcuts and common pitfalls. Major new features of the 2020 edition are: • Detailed guide to how EPSO Assistant competitions work, with timelines, chances of succeeding and how to maximise your chances of success • BRAND NEW Numerical Reasoning warm-up exercise with detailed step by step explanations of how to tackle 45 such questions and how to improve your speeds by estimating techniques and other shortcuts • BRAND NEW Abstract Reasoning warm-up exercise providing very detailed step by step solutions to 20 typical problems showing shortcuts and errors