2014 AIME II真题及答案解析
2014 AIME II真题 答案解析请参考文末 Problem 1 Abe can paint the room in 15 hours, Bea can paint 50 percent faster than Abe, and Coe can paint twice as fast as Abe. Abe begins to paint the room and ...
2014 AIME I真题及答案解析
2014 AIME I真题 答案解析请参考文末 Problem 1 The 8 eyelets for the lace of a sneaker all lie on a rectangle, four equally spaced on each of the longer sides. The rectangle has a width of 50 mm and ...
2015 AIME II真题及答案解析
2015 AIME II真题 答案解析请参考文末 Problem 1 Let be the least positive integer that is both percent less than one integer and percent greater than another integer. Find the remainder when is divid...
2015 AIME I真题及答案解析
2015 AIME I真题 答案解析请参考文末 Problem 1 The expressions = and = are obtained by writing multiplication and addition operators in an alternating pattern between successive integers. Find the po...
2016 AIME II真题及答案解析
2016 AIME II真题 答案解析请参考文末 Problem 1 Initially Alex, Betty, and Charlie had a total of peanuts. Charlie had the most peanuts, and Alex had the least. The three numbers of peanuts that each...
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...
