Analytical Ability Reviewer
Master formal categorical logic, syllogisms, Venn diagram intersections, word analogies, and valid deductive conclusions for the Professional level exam.
Core Analytical Topics & Logic Guides
Master the 4 core reasoning modules evaluated on the Professional Civil Service Examination:
10 Types of Word & Logic Analogies
Function, degree of intensity, part-to-whole, cause-and-effect, and characteristic analogies. Master the exact bridge-sentence technique to solve word pairs in 20 seconds.
Read 10 Analogy Types →Syllogisms & Venn Diagrams
Deductive categorical logic using standard Venn diagrams. Master the 4 categorical statements: All A are B, No A is B, Some A are B, and Some A are not B.
Read Syllogism Venn Guide →Assumptions & Valid Conclusions
Differentiate between an explicit premise, an unstated underlying assumption, and a necessary conclusion without introducing external real-world bias.
Read Valid Conclusion Guide →Logical Fallacy Elimination
Identify common reasoning traps set by examiners: Affirming the Consequent, Denying the Antecedent, False Cause, and Illicit Conversion.
Explore Reasoning Fallacies →Syllogism Validity Cheat Sheet (Venn Diagram Truth Rules)
Universal rules of formal deduction tested on the CSE Professional exam:
| Premise Combination | Valid Conclusion Possible? | Rule / Explanation |
|---|---|---|
| Two Negative Premises (No A is B; No B is C) | NO VALID CONCLUSION | No necessary connection exists between two mutually exclusive groups. |
| Two Particular Premises (Some A are B; Some B are C) | NO VALID CONCLUSION | The middle term B is undistributed; A and C may not overlap at all. |
| All A are B + All B are C | All A are C (and Some C are A) | Classic transitive universal syllogism. Valid deduction. |
| All A are B + No B is C | No A is C | A is completely enclosed within B, which shares zero overlap with C. |
| All A are B | Some B are A | Valid by conversion (if all lawyers are professionals, some professionals are lawyers). |
Download Free Printable Analytical Ability PDF Reviewer
Full high-yield practice set with complete answer key, explanations, and codal citations formatted cleanly for printing.
Sample Analytical Logic Question
Premise 1: All permanent government employees are mandatory GSIS members.
Premise 2: Some GSIS members are accredited housing loan beneficiaries.
Which of the following statements must be logically true based strictly on the premises?
By formal conversion of universal affirmative statements ('All A are B' implies 'Some B are A'): if every permanent government employee belongs to GSIS, it is a mathematical certainty that at least some members of GSIS are permanent government employees. Options A and D commit the fallacy of the undistributed middle.
🏛️ Official Sources & References
This study hub is compiled in strict alignment with official Civil Service Commission examination announcements and Philippine statutory laws:
- CSC Examination Announcement No. 05, s. 2026 (CY 2027 Calendar of Examinations)
- CSC Examination Announcement No. 03, s. 2026 (CSE-PPT Scope, Passing Rate & Guidelines)
- CSC Official Examination Advisories Index
- Official Gazette of the Republic of the Philippines (1987 Constitution & Republic Acts)
Joseph Yap
Civil Service Exam Review SpecialistJoseph Yap specializes in formal deductive logic for the CSE Professional examination, translating abstract syllogisms into rapid 3-circle Venn diagrams that prevent examinees from falling for logical distractor options.