2016 AIME I真题及答案解析
2016 AIME I真题 答案解析请参考文末 Problem 1 For , let denote the sum of the geometric seriesLet between and satisfy . Find . Problem 2 Two dice appear to be normal dice with their faces num...
2017 AIME II真题及答案解析
2017 AIME II真题 答案解析请参考文末 Problem 1 Find the number of subsets of that are subsets of neither nor . Problem 2 Teams , , , and are in the playoffs. In the semifinal matches, plays ,...
2017 AIME I真题及答案解析
2017 AIME I真题 答案解析请参考文末 Problem 1 Fifteen distinct points are designated on : the 3 vertices , , and ; other points on side ; other points on side ; and other points on side . Find the n...
2009AMC12B真题及答案解析
2009AMC12B真题 答案解析请参考文末 Problem 1 Each morning of her five-day workweek, Jane bought either a -cent muffin or a -cent bagel. Her total cost for the week was a whole number of dollars. How...
2009AMC12A真题及答案解析
2009AMC12A真题 答案解析请参考文末 Problem 1 Kim's flight took off from Newark at 10:34 AM and landed in Miami at 1:18 PM. Both cities are in the same time zone. If her flight took hours and minutes...
2010AMC12B真题及答案解析
2010AMC12B真题 答案解析请参考文末 Problem 1 Makarla attended two meetings during her -hour work day. The first meeting took minutes and the second meeting took twice as long. What percent of her wo...
2010AMC12A真题及答案解析
2010AMC12A真题 答案解析请参考文末 Problem 1 What is ? Problem 2 A ferry boat shuttles tourists to an island every hour starting at 10 AM until its last trip, which starts at 3 PM. One day th...
2011AMC12B真题及答案解析
2011 AMC12B 真题 答案解析请参考文末 Problem 1 What is Problem 2 Josanna's test scores to date are , , , , and . Her goal is to raise her test average at least points with her next test. What...
2011AMC12A真题及答案解析
2011 AMC12 A 真题 答案解析请参考文末 Problem 1 A cell phone plan costs dollars each month, plus cents per text message sent, plus cents for each minute used over hours. In January Michelle sent tex...
