General Aptitude
& Reasoning
Ten chapter notes covering the aptitude and reasoning component of state judiciary examinations — logical reasoning (syllogisms, analogies, series completion, coding-decoding), critical reasoning (argument analysis, strengthening and weakening arguments), mathematical reasoning (ratio, percentage, profit-loss, time-distance), data interpretation, and legal reasoning applied to principle-fact problems. Pattern first, method second, speed third.
Aptitude for judiciary — accuracy over speed.
General aptitude and reasoning is tested in the preliminary examination of most State Judiciary services alongside the law questions. The testing pattern favours accuracy over speed — the questions are not as time-pressured as banking or SSC aptitude tests, but require careful application of logical principles. The most-tested areas are syllogisms (deductive reasoning from premises to conclusion), analogies (identifying the relationship between a pair and applying it), series completion (identifying the pattern in a number or letter series), and basic mathematical reasoning.
These notes anchor every chapter to its reasoning category and its judiciary-exam-specific pattern. The most-tested areas are syllogisms (all A are B, some B are C, therefore), analogies (Plaintiff:Defendant :: Prosecution:____), series completion (2, 4, 8, 16, ____), legal reasoning (given principle, given facts, conclusion by applying principle to facts), and data interpretation (pie chart, bar graph, table).
Each chapter is designed to be read in twelve to fifteen minutes and to leave the reader with the reasoning category, the step-by-step method, worked examples, and the common traps set by the examiner.
How to read these notes
Start with the category.
Every aptitude chapter begins by identifying the reasoning category. Syllogism (deductive from premises), analogy (relationship-based), series completion (pattern-based), coding-decoding (rule-based substitution), legal reasoning (principle-application). Each category has its own method. Mixing methods — using logical inference on a series question — wastes time.
Apply the method, not intuition.
Aptitude questions reward method over intuition. Syllogisms: draw Venn diagrams and check each conclusion against all possible diagram configurations. Series: compute the differences, then the differences of differences, to find the generating rule. Legal reasoning: extract the relevant rule from the principle, identify the material facts, apply rule to facts. Intuitive guessing is the fastest way to lose marks in aptitude sections.
Test on the leading case.
If you can restate the holding of Syllogism method, analogy pattern recognition, series completion strategies, legal reasoning principle-application technique, and data interpretation approach tested in state judiciary prelims in two sentences, you understand the chapter. If not, return to the statutory section and rebuild from there.
All 10 chapters, in 3 groups
Sequenced through the natural structure of the subject — every chapter sits in a doctrinal cluster.Logical Reasoning
Syllogisms, analogies, series, coding
Syllogisms — the Venn diagram method for all-some-no premises, the four valid conclusion types (all, some, some not, none), the common traps (possibility conclusions, complementary pairs). Analogies — identifying the relationship type (part-whole, cause-effect, degree, opposites, tool-purpose) and applying it. Series completion — arithmetic series, geometric series, alternating series, difference-of-difference method. Coding-decoding — letter substitution, position-based coding, word-based coding.
Mathematical Reasoning & Data Interpretation
Arithmetic + DI for judiciary prelims
Ratio and proportion — direct and inverse proportion, partnership problems. Percentage — percentage change, percentage of, successive percentage changes. Profit, loss, and discount. Time and distance, time and work. Simple and compound interest. Data interpretation — reading pie charts (converting degrees to percentages), bar graphs (reading multi-series), tables (reading and comparing). The approach for each DI type: read the question first, then find the relevant data.
Legal Reasoning & Critical Reasoning
Principle-application + argument analysis
Legal reasoning — the principle-application method: extract the rule from the principle, identify the material facts from the factual situation, apply the rule mechanically to reach the conclusion. The common error of using independent legal knowledge. Critical reasoning — identifying the conclusion of an argument, identifying the supporting premise, strengthening an argument (adding a fact that makes the conclusion more likely), weakening an argument (adding a fact that makes the conclusion less likely). Practice examples from previous judiciary prelim papers.