2025 | RECURSO - QUESTÃO 30 | CONCURSO MUNICIPAL XANGRI-LÁ| PROVA: DOMINGO 19/10 | TARDE.

📘 Logical Reasoning Test Correction – Xangri-Lá Municipal Competition (RS) 📅 Test taken on: 10/19/2025 – Afternoon Shift 🎓 Level: Higher Education | Questions solved: 30 👨‍🏫 Professor: Elói Junior (Eloigica) Correction of questions 26, 27, 28, 29:    • 2025 |CORREÇÃO RACIOCÍNIO LÓGICO |CONCURSO...   In this video, we correct a classic Propositional Logic question that asks you to relate Contradiction (1), Contingency (2), and Tautology (3) to the given examples. Statement (summary): Relate: ( ) If it is cold I will wear a coat, and if it is not cold I will not wear a coat. ( ) All jaguars are brown and at least one jaguar is not brown. ( ) If José went to the movies and Ana stayed home, then Pedro left early. Correct classification (from top to bottom): 2 – 1 – 2 Note: none of the alternatives presented in the statement contains the sequence 2–1–2. Therefore, there is an error in the options. The conceptual correction is the sequence above. Why? “If it's cold I will wear a coat, and if it's not cold I will not wear a coat.” Form: (P → Q) ∧ (¬P → ¬Q) ≡ P ↔ Q. It can be true (when cold and coat agree) or false (when they disagree). → Contingency (2). “All jaguars are brown and at least one jaguar is not brown.” It affirms something and its opposite at the same time. Impossible. → Contradiction (1). “If José went to the movies and Ana stayed home, then Pedro left early.” Common implication: (P ∧ Q) → R. Dependent on the facts; can be True or False. → Contingency (2). 🔔 Exam tip: Tautology (3): always true (e.g., P ∨ ¬P). Contradiction (1): always false (e.g., P ∧ ¬P). Contingency (2): sometimes true, sometimes false. If you liked the explanation, leave a like, comment if you noticed the error in the alternatives, and subscribe to the channel for more Logic corrections! #LogicalReasoning #PropositionalLogic #Logic #FUNDATEC #ExamTakers