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Đề thi AMC 8 năm 2018

Bạn đọc tham khảo đề thi AMC 8 tại đây

Problem 16


Professor Chang has nine different language books lined up on a bookshelf: two Arabic, three German, and four Spanish. How many ways are there to arrange the nine books on the shelf keeping the Arabic books together and keeping the Spanish books together?

Problem 17

Bella begins to walk from her house toward her friend Ella’s house. At the same time, Ella begins to ride her bicycle toward Bella’s house. They each maintain a constant speed, and Ella rides 5 times as fast as Bella walks. The distance between their houses is  miles, which is feet, and Bella covers  feet with each step. How many steps will Bella take by the time she meets Ella?


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