AMC 8 2002 Problem 10
AMC8 2002 年第 10 题
统计与数据图表★★☆☆☆
Problems 8,9 and 10 use the data found in the accompanying paragraph and table: Juan organizes the stamps in his collection by country and by the decade in which they were issued. The prices he paid for them at a stamp shop were: Brazil and France, 6 cents each, Peru 4 cents each, and Spain 5 cents each. (Brazil and Peru are South American countries and France and Spain are in Europe.) The average price of his '70s stamps is closest to
他的 70 年代的所有邮票的平均价格最接近 Problem 11 A sequence of squares is made of identical square tiles. The edge of each square is one tile length longer than the edge of the previous square. The first three squares are shown. How many more tiles does the seventh square require than the sixth? 下面一系列正方形都是由若干相同的方形瓷砖组成的。每个正方形的边长比前一个正方形的边长多一个瓷砖长度。下图显示了前三个正方形。则第七个正方形比第六个正方形多需要多少块瓷砖？
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正确答案 · Correct Answer
E
解析 · Solution
解析整理中
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