6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 A ll AMC 12 Problems and Solutions The problems on this page are copyrighted by the Mathematical Association of America ()s...
不过由于AMC12的题目更难一些,后五题的计算量也会更高一些,所以相对而言AMC12的时间更紧张一些; AMC12历年晋级的分数线大概在90上下,官方晋级率大概在8%左右,全球前5%和前1%的考生可以分别获得HR和DHR两个更高奖项。 相对而言,AMC...
5.Only blank scratch paper,rulers,and erasers are allowed as aids.Prohibited ma- terials include calculators,smartwatches,phones,computing devices,compasses, protractors,and graph paper.No problems on the competition will require the use of a calculator.©2023Mathematical Association of America ...
批注[c1]: 2020 AMC10A Problem1 What value of satisfies Solution Adding to both sides, . Problem2 The numbers and have an average (arithmetic mean) of . What is the average of and ? Solution The arithmetic mean of the numbers and is equal to . Solving for , we get . Dividing by to...
What is denotes the 2020 AMC 12A Answer Key 1. C 2. C 3. E 4. B 5. C 6. D 7. B 8. C 9. E 10.E 11.B 12.B 13.B 14.B 15.D 16.B 17.D 18.D 19.C 20.A 21.D 22.B 23.A 24.B 25.C 2020 AMC 12B Problems Problem 1 What is the value in simplest form of ...
1 2020 AMC10A Problem 1 What value of satisfies x 为何值时满足方程 Problem 2 The numbers and have an average (arithmetic mean) of . What is the average of and ? 数字 3，5，7，a 和b 的平均值（算数平均值）是15。则a 和b 的平均值是多少? Problem 3 Assuming , , and , what ...
批注[c1]: 2020 AMC10A Problem1 What value of satisfies Solution Adding to both sides, . Problem2 The numbers and have an average (arithmetic mean) of . What is the average of and ? Solution The arithmetic mean of the numbers and is equal to . Solving for , we get . Dividing by to...
2020 AMC 12A Problems/Problem 1 Carlos took of a whole pie. Maria took one third of the remainder. What portion of the whole pie was left? Solution 1 If Carlos took of the pie, must be remaining. After Maria takes of the remaining is left.Therefore:-Contributed by Awesome2.1,...
2020年 AMC 10B真题含答案.pdf,2020AMC10B 2020AMC10B Problem 1 Whatisthevalueof 下列算式的值为多少 Problem 2 Carlhas cubeseachhavingsidelength ,andKatehas cubeseachhavingsidelength .Whatis thetotalvolumeofthese cubes? Carl 5 1 Kate 5 2 10 有 个边长为 的立
3 2020AMC12B Problem 10 Inunitsquare theinscri edcircle intersects at and intersects ata point differentfrom Whatis w ABCD M W M P 圆 内切于单位正方形 ,且和线段 交于 点,线段 交 于和 不同的点 。 AP 那么 是多长? Problem 11 Asshowninthefigure elow,sixsemicircleslieintheinteriorofaregular...