TNPSC Group 4 Aptitude & Mental Ability — syllabus & how to prepare
Aptitude & Mental Ability is Part-C of the paper — 25 questions. Unlike General Studies it rewards practice over reading: once you know the methods, these are among the most reliable marks to secure.
What Aptitude & Mental Ability covers
The main sub-areas within this part of the TNPSC Group 4 General Studies syllabus:
Arithmetic Basics
Simplification; Percentage.
HCF and LCM
Highest Common Factor (HCF); Lowest Common Multiple (LCM).
Ratio and Interest
Ratio and Proportion; Simple Interest; Compound Interest.
Mensuration and Work
Area; Volume; Time and Work.
Verbal and Symbolic Reasoning
Logical Reasoning; Puzzles.
Visual and Spatial
Dice; Visual Reasoning.
Coding and Sequences
Alpha Numeric Reasoning; Number Series.
How it's tested
Part-C carries 25 questions of numerical aptitude and reasoning. Because the methods repeat, consistent practice turns this into a dependable scoring section.
How to study it
- Practise daily — aptitude improves with reps, not reading.
- Learn a standard method for each question type.
- Time your practice to build exam-day speed.
This is a study guide to the syllabus area, not the official syllabus itself. Always confirm the current topics and exam pattern in the official TNPSC notification before you prepare.
Practise Aptitude & Mental Ability in the app
ArivoliAI TNPSC Group 4 turns this syllabus into structured lessons, topic-wise quizzes, previous year questions, timed mock tests and audio revision — in Tamil and English.
More TNPSC Group 4 syllabus guides
General Science
Physics, chemistry, life science and environment (SSLC standard).
Geography
Earth, climate, resources, agriculture and disaster management.
History, Culture & National Movement
Indian history, the freedom struggle, leaders and culture.
Indian Polity
The Constitution, rights, government structure and judiciary.
Economy & TN Development
Economy, planning, welfare and Tamil Nadu development.
Tamil Nadu History & Culture
Tamil society, literature, Thirukkural and social reform.
