Excel Success One HSC reproduces past HSC papers with worked solutions for every question. This book includes: 2013-2019 Past HSC Mathematics Extension 1 (old syllabus) with indicators to show which questions are not examinable in the current Mathematics Extension 1 syllabus; Bonus questions from the Mathematics Extension 1 syllabus. After every one of the old syllabus HSC past papers Excel provides lots of specially written questions on the current syllabus topics, such as Vectors and Differential Equations, to replace those questions that are no longer examinable in these papers. This will allow you to practise complete papers worth 70 marks for the Mathematics Extension 1 syllabus; The 2020-2025 HSC Examination papers for the current syllabus; Worked answers for every question. These answers are detailed and easy to understand written by experienced HSC markers; Plus a topic index of past HSC questions.