TNPSC · Group IV
TNPSC Group IV Aptitude & Mental Ability
குரூப் 4 திறனறிவு மற்றும் கணிதம்
Complete topic-wise guide for TNPSC Group IV aptitude: arithmetic, reasoning, number series, data interpretation, coding-decoding, and formula sheet — with daily practice method and PYQ pattern analysis.
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Related Study Links
Use these internal guides and practice pages when they match the paper or stage you are preparing for.
TNPSC aptitude practice — timed sets
Topic-wise timed practice for quantitative aptitude, reasoning, mental ability, and DI.
AptitudePercentage problems guide
Covers marks%, population%, election%, profit-loss%, and successive percentages.
AptitudeRatio and proportion guide
Direct/inverse proportion, compound ratio, and partnership splits.
AptitudeTime and work guide
Work rate, combined work, pipes and cisterns — important for TNPSC.
ReasoningNumber series practice
Identify patterns, complete series, and find the odd term.
ReasoningCoding-decoding practice
Letter shift, reverse coding, symbol substitution — repeated in Group IV.
Group IVGroup IV previous papers
Download official previous papers and practice the aptitude section separately.
Group IVGroup IV exam pattern
Check total questions, marks per section, duration, and negative marking rules.
Group IVGroup IV study plan
90-day phase plan balancing aptitude, General Studies, Tamil, and current affairs.
Topic coverage
- Arithmetic: Number System, Percentage, Profit & Loss, Ratio & Proportion, Average, Simple & Compound Interest, Time & Work, Speed & Distance, Mensuration.
- Reasoning: Number Series, Coding-Decoding, Blood Relations, Direction Sense, Analogy, Classification.
- Data Interpretation: bar chart, pie chart, table, and line graph reading.
Daily practice method
- Practice 15 questions in 12 minutes every day — train for TNPSC's 72-second-per-question pace.
- Keep a formula notebook; revise it each morning for 5 minutes.
- Record errors by type: formula gap, reading error, or calculation mistake — fix each differently.