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2020 AMC 12A problems and solutions. The test was held on Thursday, January 30, 2020. The problems on this page are copyrighted by the Mathematical Association of America 's American Mathematics Competitions.
- Problem 1
Solution 1. If Carlos took of the pie, there must be left....
- Problem 1
2020 AMC 12A Printable versions: Wiki • AoPS Resources • PDF: Instructions. This is a 25-question, multiple choice test. Each question is followed by answers marked A, B, C, D and E. Only one of these is correct.
2020 AMC 12A Problems Problem 1 Carlos took 70% of a whole pie. Maria took one third of the remainder. What portion of the whole pie was left? Problem 2 The acronym AMC is shown in the rectangular grid below with grid lines spaced unit apart. In units, what is the sum of the lengths of the line segments that form the acronym AMC Problem 3
AIME floor: Before 2020, approximately the top 2.5% of scorers on the AMC 10 and the top 5% of scorers on the AMC 12 were invited to participate in AIME. Since 2020, the AIME floor has been set to a higher percentage of scores, likely to ensure that a consistent number of students qualify for AIME each year, rather than a fixed percentage.
Resources Aops Wiki 2020 AMC 12A Problems/Problem 12 Page. Article Discussion View source History. Toolbox. Recent changes Random page Help What links here Special pages. Search. 2020 AMC 12A Problems/Problem 12. Contents. 1 Problem; 2 Solution 1; 3 Solution 2; 4 Solution 3; 5 Solution 4 (Cheap) 6 Solution 5 (Rotation Matrix) 7 Solution 6 ...
Links to forum topics where each problem was discussed. PDF documents with all problems for each test. Lists of answers for each test.
AoPS Community 2020 AMC 12/AHSME 6 For all integers n 9;the value of (n+2)! (n+1)! n! is always which of the following? (A) a multiple of 4 (B) a multiple of 10 (C) a prime number (D) a perfect square (E) a perfect cube 7 Two nonhorizontal, non vertical lines in the xy-coordinate plane intersect to form a 45 angle. One line has slope equal to 6 times the slope of the other line.
