11+ Maths - Must Know Topics - PDF Book 6. Digital Download. Covers everything you need to know about Probability - including Mutually Exclusive Events, Independent Events, Probability Space Diagram, Probability with Overlaps, Relative and Expected Frequency, Tricky probability questions and much more. Over 90 pages with nearly 300 questions, and detailed Step-by-Step explanation. This is a Textbook (teaches you techniques) and a Workbook (for further practice).  Includes lots of Tips and Traps to become 11+ ready. Get it on any device within seconds of purchase! An absolute Must-Have from elevenplusvocab.com!