📘 CRB-1ª Região 2026 QUADRIX | Raciocínio Lógico e Matemática COMPLETO | Assistente Administrativo

If you took the Logical Reasoning and Mathematics exam for the CRB-1st Region (DF, GO, MT and MS) competition, for the position of Administrative Assistant, administered by QUADRIX in 2026, this video provides a complete, detailed, and 100% commented correction of the items covered in the exam (items 17 to 28). Here at Matemática Bruta, you can follow the step-by-step solution, understanding the reasoning behind each item and how the QUADRIX exam board tests combinatorics, mean, median, mode, logical equivalences, negation of biconditionals, and geometric progressions in a true/false judgment format. In practice, it's the commented answer key for Logical Reasoning and Mathematics for the CRB-1st Region 2026 – Administrative Assistant exam. 💚 Support Brutal Math Become a member and get exclusive benefits 👉    / @matematicabruta   ❤️ Subscribe and activate the 🔔 https://www.youtube.com/@matematicabr... ⏱ VIDEO INDEX (fill in the times after uploading the video) 00:00 Introduction 01:17 Item 17 – Committee with 12 interns: unrestricted combination Item 18 – Committee with all 3 from Brasília required Item 19 – Committee with at least 1 from Brasília 12:34 Item 20 – Average of grades and calculation of Gael's grade Item 21 – Median of the 30 grades Item 22 – Mode of the 30 Notes 18:13 Item 23 – Biconditionals and implication between propositions Item 24 – Logical value from a false proposition Item 25 – Negation of “if, and only if” 23:25 Item 26 – Hydra's geometric progression: number of heads on the 7th attempt Item 27 – Sum of the first 8 records Item 28 – 10th attempt and comparison with 1,000 heads 📚 Topics covered in the exam • Combinatorial analysis (combinations); • Arithmetic mean, median, and mode; • Propositional logic and biconditionals; • Negation of propositions; • Geometric progression; • Judging items in the QUADRIX style. ⚙️ Complete Course on Logical-Mathematical Reasoning by Exam Board: FCC: 👉    • FCC - CURSO DE RACIOCÍNIO LÓGICO para CONC...   FGV: 👉    • FGV - CURSO DE RACIOCÍNIO LÓGICO para CONC...   VUNESP: 👉    • VUNESP - CURSO DE RACIOCÍNIO LÓGICO para C...   AOCP: 👉    • 🧠 AOCP - CURSO DE RACIOCÍNIO LÓGICO para C...   🎯 Playlists to continue studying: 📘 FCC — Mathematical Logical Reasoning:    • FUNDATEC | Raciocínio Lógico Matemático – ...   📘 FGV:    • FGV | Raciocínio Lógico Matemático – Prova...   📘 VUNESP:    • VUNESP | Raciocínio Lógico Matemático – Pr...   📘 AOCP:    • INSTITUTO AOCP | Raciocínio Lógico Matemát...   📘 QUADRIX:    • QUADRIX | Raciocínio Lógico Matemático – P...   📘 IBFC:    • IBFC | Raciocínio Lógico Matemático – Prov...   📘 CEBRASPE:    • CEBRASPE | Raciocínio Lógico Matemático – ...   📘 CESGRANRIO:    • CESGRANRIO | Raciocínio Lógico Matemático ...   #crb1regiao #crb1 #quadrix #quadrix2026 #administrative assistant #reasoning #mathematics #proofresolved #commented answer key #questoescomentadas #mathematicabruta #concursopublico #combinatoria #media #mediana #moda #logicaproposicional #bicondicional #negacao #pg