Unit 3.5.1 - Classification of firmsThis section of the Cambridge IGCSE Economics (0455) syllabus requires students to understand the classification of firms in terms of: (1) primary, secondary, and tertiary sectors, (2) private and public sector, and (3) the relative size of firms.Note: detailed knowledge of different types of structure of a firm is not required.The classification of firms can be done according to the...