Do you know how to identify GCD and GCD questions and how to solve this type of question? Don't doubt it, class, least common multiple and greatest common divisor can appear in the ENEM exams and you can't go wrong. Do you want to learn how to solve questions about gcd and gcd? In this Math video lesson, you will learn how to solve questions about least common multiple and greatest common divisor that have already appeared in the ENEM, in previous exams, in addition to being able to download the material in PDF in the last link of the description to practice. This content is studied in the 6th grade of elementary school. Don't forget, this subject is a good choice for the ENEM. Study with me and be successful in Math. ONLINE MATHEMATICS PLATFORM: https://thyagoaraujo.com/ Solved questions from previous ENEM exams 01. (ENEM-2015) The manager of a movie theater provides free tickets to schools every year. This year, 400 tickets will be distributed for an afternoon session and 320 tickets for an evening session of the same movie. Several schools can be chosen to receive tickets. There are some criteria for distributing tickets: 1) each school must receive tickets for a single session; 2) all selected schools must receive the same number of tickets; 3) there will be no leftover tickets (i.e., all tickets will be distributed). The minimum number of schools that can be chosen to receive tickets, according to the established criteria, is a) 2. b) 4. c) 9. d) 40. e) 80. 02. (ENEM-2015) An architect is renovating a house. In order to contribute to the environment, he decides to reuse wooden boards removed from the house. He has 40 boards measuring 540 cm, 30 measuring 810 cm and 10 measuring 1,080 cm, all of the same width and thickness. He asked a carpenter to cut the boards into pieces of the same length, leaving no leftovers, and so that the new pieces would be as large as possible, but shorter than 2 m. In compliance with the architect's request, the carpenter should produce a) 105 pieces. b) 120 pieces. c) 210 pieces. d) 243 pieces. e) 420 pieces. 03. (ENEM-2016/2nd Application) In order to work on the concentration and synchronization of movements of the students in one of his classes, a physical education teacher divided the class into three groups (A, B, and C) and determined the following activity: the students in group A should clap every 2 s, the students in group B should clap every 3 s, and the students in group C should clap every 4 s. The teacher reset the timer and the three groups started clapping when it recorded 1 s. The movements continued until the stopwatch registered 60 s. An intern wrote down on paper the sequence formed by the instants at which the three groups clapped simultaneously. What is the general term of the written down sequence? a) 12 n, where n is a natural number such that 1 ≤ n ≤ 5 b) 24 n, where n is a natural number such that 1 ≤ n ≤ 2 c) 12 (n - 1 ), where n is a natural number such that 1 ≤ n ≤ 6 . d) 12 (n - 1 ) + 1 , with n a natural number such as 1 ≤ n ≤ 5. e) 24 (n - 1 ) + 1 , with n a natural number such as 1 ≤ n ≤ 3. --- Follow us on social media: ► PLATFORM (Website): https://thyagoaraujo.com/cursos/ ► Instagram: / escoladenumeros ► Instagram: / professorthyagoaraujo ► Instagram: / prof.raissacosta ► Instagram: / danieloliveira_qui ► Instagram: / andrefisica ► Twitter: / escoladenumeros CONTACT EMAIL: [email protected] Here on the channel you will find several free video classes in Mathematics, Chemistry, Physics and Biology for elementary and high school. SUBSCRIBE TO THE CHANNEL HERE: https://www.youtube.com/c/EscoladeNum... QUESTION LISTS: https://thyagoaraujo.com/listas-de-qu... CREATED BY MASTER PROFESSOR IN MATHEMATICS THYAGO ARAUJO FERREIRA #Mathematics #PaesUema2022 #ENEM2021