CAT comprises of three subjects:
The Quantitative Aptitude segment involves key arithmetic, Algebra, Geometry and Commercial Mathematics (word problems). These are based on 10+2 trouble dimension.
Data Interpretation and Logical Reasoning involves questions which are dependent on certain information given. This information may be in the form of diagrams, tables, graphs and passages. It tests the applicant's ability to comprehend information and capacity to apply that information into logical problems.
The Verbal Ability segment tests the understanding of standard English sentence structure and grammar. The syllabus includes basic questions based on grammar rules and vocabulary. Reading Comprehension includes a range of abstract topics followed by inferential questions. The aggregate of these 4 subjects determines your overall score and percentile in the examination.