2020AMC10A Problem8 Whatisthevalueof 下式的值为多少 Problem9 Asinglebenchsectionataschooleventcanholdeitheradultsorchildren.Whenbench sectionsareconnectedendtoend,anequalnumberofadultsandchildrenseatedtogetherwill occuyallthebenchsace.Whatistheleastossibleositiveintegervalueof ...
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,...
What is ? Problem 25 For each real number with , let numbers and be chosen independently at random from the intervals and , respectively, and let be the probability that What is the maximum value of 2020 AMC 12B Answer Key 1. C 2. A 3. E 4. D 5. C 6. D 7. C 8. D 9. ...
Problem8 Allofthetrianglesinthediagrambelowaresimilartoisoscelestriangle,in which.Eachofthe7smallesttriangleshasarea1,andhasarea40.Whatisthe areaoftrapezoid? 下图中的所有三角形与等腰三角形ABC类似,AB=AC。7个最小的三角形的面积都是1, 的面积是40。梯形DBCE的面积是多少?
8 2010AMC12B Problem25 Foreveryinteger,letbethelargestpowerofthelargestprimethatdivides.For example.Whatisthelargestintegersuchthatdivides ? 对于每个整数,令表示能够整除的最大质因数的最大幂。例如 。问使得能够整除 的最大整数是少? 9 2010AMC12B 2010AMC12BAnswerKey 12345678910111213 CAEBDDCBEBEDC 141516171...
amc2019-answerkeyFinal澳大利亚数学竞赛 (AMC)真题与答案 MP 1: D 2: B 3: C 4: C 5: E 6: A 7: B 8: C 9: D 10: A 11: E 12: D 13: B 14: E 15: E 16: B 17: E 18: C 19: B 20: C 21: A 22: A 23: C 24: D 25: C 26: 390 27: 234 28: 162 29: 224...
2020年AMC12真题及答案 2016 AMC12 A Problem 1 What is the value of ?Solution Problem 2 For what value of does ?Solution Problem 3 The remainder can be defined for all real numbers and with by where denotes the greatest integer less than or equal to . What is the value of ?Solution Pr...
Solution We find the area of the big rectangle to be , and the area of the smaller rectangle to be . The answer is then . See also 2010 AMC 12B (Problems • Answer Key • Resources (/Forum/resources.php?c 182cid 44year 2010)) Preceded by Followed by Problem 1 Problem 3 ...
After Maria takes of the remaining is left.Therefore:-Contributed by Awesome2.1, latex by quacker88https://youtu.be/qJF3G7_IDgc~IceMatrix2020 AMC 12A (Problems • Answer Key • Resources (http://www.artofproblemsolving.com/Forum/resources.php?c=182&cid=44&year=2020)... 文档格式:...
设想由单位正方形所构成之大正方形,右图所示为其中的一部分,围绕 中心黑色正方形的第一圈共有 8 个单位正方形,第二圈共有 16 个单位正 方形,依此类推,第 100 圈中的单位正方形的个数为 。 (A) 396 (B) 404 (C) 800 (D) 10,000 (E) 10,404 12. 设 n 为三个连续整数的乘积且 n 可...