These notes are prepared based on an extensive research on the IGCSE past papers from 2002-2017.Every concept or any new application based question, is made a part of the notes. The notes are to the point and attractively and accurately made. Graphs , diagrams tables have been included wherever necessary. These notes are the ultimate. Once you get them you need not make your own notes. They are a beautiful blend of a note book and a revision guide.A few past paper questions have been included for practise too.