Venn Diagrams & Simple Syllogisms

A high-yield practice drill on Venn Diagrams and Categorical Syllogisms tailored for Kerala PSC exams. It covers three-class logical inclusions, concentric subsets, set cardinality calculations ($$n(A \cup B) = n(A) + n(B) - n(A \cap B)$$), and standard two-premise syllogistic deduction rules.

Study Scope

• Class Inclusions: Concentric subsets (e.g. Seconds, Minutes, Hours) vs disjoint subsets (e.g. Fruits, Apples, Oranges)
• Cross-Category Overlaps: Three intersecting sets (e.g. Teachers, Authors, Musicians)
• Two-Set Cardinality: Finding 'only A', 'only B', and 'both' elements
• Syllogistic Deductions: Evaluating universal and particular statements (All A are B, Some B are C)

Tested Competencies

• Map natural categories instantly to the correct geometric Venn representation
• Apply set union and intersection formulas with zero numerical error
• Evaluate syllogism conclusions strictly from given premises without real-world bias