Book 6: Problem Challenge 5-Year Competition Book 2015 – 2019 (including Final Challenge)

The sixth competition book is similar to Books 3, 4 and 5 and features all 125 problems from 2015 to 2019, together with the corresponding questions from the Final Challenge competition (another 100 questions). It features coloured illustrations, full solutions and analysis, and ideas for extension work. Another 116 pages of problem solving!