A questão mais fácil da prova? - QUESTÃO 1 - NÍVEL 3 - OBMEP 2021

Best website for studying using QUESTIONS: https://wqd.com.br/ ▶ Most viewed videos on the channel: ▶ How to win a gold medal in the OBMEP (Brazilian Mathematical Olympiad)    • COMO CONSEGUIR MEDALHA DE OURO NA OBMEP - ...   ▶ How to learn math much faster    • COMO APRENDER MATEMÁTICA MUITO MAIS RÁPIDO   ▶ How I got 980 on the ENEM 2018 essay    • COMO EU TIREI 980 NA REDAÇÃO DO ENEM ESTUD...   ▶ Logical reasoning for OBMEP:    • Raciocínio Lógico - Questões de Sequência ...   ▶ How to solve a first-degree equation?    • EQUAÇÃO DO 1º GRAU - Como resolver de mane...   Question: Gabriel likes to fill in 3x3 grids with numbers in such a way that any three of them, aligned horizontally, vertically, or diagonally, have the following property: the central number must be the arithmetic mean of its two neighbors. a) Complete the grid started by Gabriel. b) Fill in the grid below following the same instruction indicated above. c) What will be the sum of the nine numbers in the grid below after Gabriel finishes filling it in? Here we post some tips every week to help you: ▶ Instagram: http://bit.ly/InstagramSoomi ▶ Facebook: http://bit.ly/FacebookSoomi Who is part of Só o Mi? --Leonardo Silva Nóbrega --Lucas Silva Nóbrega --Thais Silva Nóbrega We are all medalists in the OBMEP (Brazilian Mathematics Olympiad) and have participated in 7 editions of the OBMEP Scientific Initiation Program.