{"id":2765,"date":"2025-11-06T09:52:42","date_gmt":"2025-11-06T17:52:42","guid":{"rendered":"https:\/\/areteem.org\/blog\/?p=2765"},"modified":"2025-11-14T08:55:12","modified_gmt":"2025-11-14T16:55:12","slug":"2025-amc-10a-amc-12a-answer-key-released","status":"publish","type":"post","link":"https:\/\/areteem.org\/blog\/2025-amc-10a-amc-12a-answer-key-released\/","title":{"rendered":"2025 AMC 10A & AMC 12A Answer Key Released"},"content":{"rendered":"\n

Yesterday, thousands of middle school and high school students participated in this year’s AMC 10A and 12A Competition.<\/p>\n\n\n\n

The problems can now be discussed! See below for answer keys and concepts tested for every problem on the 2025 AMC 10A and AMC 12A held on November 5th, 2025.<\/p>\n\n\n\n

2025 AMC 10A Answers<\/strong><\/p>

\n
1<\/strong><\/div>\n
E<\/strong><\/div>\n
arithmetic and algebra: motion<\/div>\n<\/div>\n
\n
2<\/strong><\/div>\n
B<\/strong><\/div>\n
algebra: mixing and percents<\/div>\n<\/div>\n
\n
3<\/strong><\/div>\n
D<\/strong><\/div>\n
geometry: isosceles triangles, counting, and triangle inequality<\/div>\n<\/div>\n
\n
4<\/strong><\/div>\n
A <\/strong><\/div>\n
algebra: equations and averages<\/div>\n<\/div>\n
\n
5<\/strong><\/div>\n
E<\/strong><\/div>\n
algebra: sequences and patterns<\/div>\n<\/div>\n
\n
6<\/strong><\/div>\n
C<\/strong><\/div>\n
geometry: triangles, hexagons, and angles in polygons<\/div>\n<\/div>\n
\n
7<\/strong><\/div>\n
E<\/strong><\/div>\n
algebra: polynomial long division and polynomial remainder theorem<\/div>\n<\/div>\n
\n
8<\/strong><\/div>\n
B<\/strong><\/div>\n
logic and reasoning<\/div>\n<\/div>\n
\n
9<\/strong><\/div>\n
C<\/strong><\/div>\n
algebra: cubics, factoring, and transformations<\/div>\n<\/div>\n
\n
10<\/strong><\/div>\n
C<\/strong><\/div>\n
geometry: circles, chords, and areas<\/div>\n<\/div>\n
\n
11<\/strong><\/div>\n
E<\/strong><\/div>\n
algebra: arithmetic and geometric sequences<\/div>\n<\/div>\n
\n
12<\/strong><\/div>\n
D<\/strong><\/div>\n
combinatorics: counting, numbers, and digits<\/div>\n<\/div>\n
\n
13<\/strong><\/div>\n
D<\/strong><\/div>\n
geometry and algebra: squares, areas, and geometric series<\/div>\n<\/div>\n
\n
14<\/strong><\/div>\n
B<\/strong><\/div>\n
combinatorics: probability, circular permutations, and grouping<\/div>\n<\/div>\n<\/div>
\n\n
\n
15<\/strong><\/div>\n
A<\/strong><\/div>\n
geometry: Pythagorean theorem, similar triangles, and quadratic equations<\/div>\n<\/div>\n
\n
16<\/strong><\/div>\n
D<\/strong><\/div>\n
combinatorics: maximums and expected value<\/div>\n<\/div>\n
\n
17<\/strong><\/div>\n
E<\/strong><\/div>\n
number theory: quotients, remainders, and prime factorizations<\/div>\n<\/div>\n
\n
18<\/strong><\/div>\n
B<\/strong><\/div>\n
algebra: polynomials, Vieta’s formulas, and harmonic means<\/div>\n<\/div>\n
\n
19<\/strong><\/div>\n
A<\/strong><\/div>\n
combinatorics and algebra: recurrences, differences, sequences, and patterns<\/div>\n<\/div>\n
\n
20<\/strong><\/div>\n
A<\/strong><\/div>\n
geometry: circles, tangents, ratios, and similar triangles<\/div>\n<\/div>\n
\n
21<\/strong><\/div>\n
C<\/strong><\/div>\n
combinatorics: sets, counting, and careful thinking<\/div>\n<\/div>\n
\n
22<\/strong><\/div>\n
B<\/strong><\/div>\n
geometry: circles, radii, Pythagorean theorem, and quadratic equations<\/div>\n<\/div>\n
\n
23<\/strong><\/div>\n
D<\/strong><\/div>\n
geometry: triangles, areas, altitudes, and angle bisector theorem<\/div>\n<\/div>\n
\n
24<\/strong><\/div>\n
C<\/strong><\/div>\n
combinatorics: counting, digits, subsets, and patterns<\/div>\n<\/div>\n
\n
25<\/strong><\/div>\n
A<\/strong><\/div>\n
combinatorics and geometry: triangles, circles, careful thinking, and areas<\/div>\n<\/div>\n<\/div><\/div>\n\n

2025 AMC 12A Answers<\/strong><\/p>

\n
1<\/strong><\/div>\n
E<\/strong><\/div>\n
arithmetic and algebra: motion<\/div>\n<\/div>\n
\n
2<\/strong><\/div>\n
B<\/strong><\/div>\n
algebra: mixing and percents<\/div>\n<\/div>\n
\n
3<\/strong><\/div>\n
A <\/strong><\/div>\n
algebra: equations and averages<\/div>\n<\/div>\n
\n
4<\/strong><\/div>\n
B<\/strong><\/div>\n
logic and reasoning<\/div>\n<\/div>\n
\n
5<\/strong><\/div>\n
D<\/strong><\/div>\n
geometry and algebra: squares, areas, and geometric series<\/div>\n<\/div>\n
\n
6<\/strong><\/div>\n
B<\/strong><\/div>\n
combinatorics: probability, circular permutations, and grouping<\/div>\n<\/div>\n
\n
7<\/strong><\/div>\n
C<\/strong><\/div>\n
algebra: logarithms, exponents, and equations<\/div>\n<\/div>\n
\n
8<\/strong><\/div>\n
E<\/strong><\/div>\n
geometry: cyclic quadrilaterals, law of cosines, and angle bisector theorem<\/div>\n<\/div>\n
\n
9<\/strong><\/div>\n
E<\/strong><\/div>\n
algebra: complex numbers and lines<\/div>\n<\/div>\n
\n
10<\/strong><\/div>\n
B<\/strong><\/div>\n
geometry: circles, arcs, arc lengths, and equations<\/div>\n<\/div>\n
\n
11<\/strong><\/div>\n
A<\/strong><\/div>\n
geometry: triangles, altitudes, orthocenters, and coordinates<\/div>\n<\/div>\n
\n
12<\/strong><\/div>\n
B<\/strong><\/div>\n
algebra: polynomials, Vieta’s formulas, and harmonic means<\/div>\n<\/div>\n
\n
13<\/strong><\/div>\n
D<\/strong><\/div>\n
combinatorics: counting, subsets, consecutive integers, and cases<\/div>\n<\/div>\n
\n
14<\/strong><\/div>\n
D<\/strong><\/div>\n
geometry: ellipses, eccentricity, and homothety<\/div>\n<\/div>\n<\/div>
\n
\n
15<\/strong><\/div>\n
C<\/strong><\/div>\n
combinatorics: sets, counting, and careful thinking<\/div>\n<\/div>\n
\n
16<\/strong><\/div>\n
D<\/strong><\/div>\n
geometry: triangles, areas, altitudes, and angle bisector theorem<\/div>\n<\/div>\n
\n
17<\/strong><\/div>\n
A<\/strong><\/div>\n
algebra: cubics, complex numbers, factoring, and areas<\/div>\n<\/div>\n
\n
18<\/strong><\/div>\n
C<\/strong><\/div>\n
combinatorics: complementary counting and cases<\/div>\n<\/div>\n
\n
19<\/strong><\/div>\n
E<\/strong><\/div>\n
algebra: Vieta’s formulas, symmetric polynomials, and factoring<\/div>\n<\/div>\n
\n
20<\/strong><\/div>\n
C<\/strong><\/div>\n
geometry: Pythagorean theorem, volumes, pyramids, and prisms<\/div>\n<\/div>\n
\n
21<\/strong><\/div>\n
A<\/strong><\/div>\n
algebra and number theory: prime factorizations, geometric series, and factoring<\/div>\n<\/div>\n
\n
22<\/strong><\/div>\n
E<\/strong><\/div>\n
combinatorics and geometry: geometry probability, volumes, and pyramids<\/div>\n<\/div>\n
\n
23<\/strong><\/div>\n
C<\/strong><\/div>\n
combinatorics: counting, digits, subsets, and patterns<\/div>\n<\/div>\n
\n
24<\/strong><\/div>\n
C<\/strong><\/div>\n
geometry: circles, regular polygons, and trig. identities<\/div>\n<\/div>\n
\n
25<\/strong><\/div>\n
E*<\/strong><\/div>\n
algebra: factoring, graphing, cases, inequalities, and careful thinking<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

There seems to be a mistake for #25 on AMC 12A. E should be the intended answer as there are 13 pairs of P(x) and Q(x), however, there are only 8 different functions. We will update this page once we know how the MAA is dealing with this discrepancy.<\/p>\n\n\n\n

In total, 10 questions of the same questions appeared on both the AMC 10A and AMC 12A. They are listed below:<\/p>\n\n\n\n

<\/p>\n\n\n\n

AMC 10A<\/strong><\/td>AMC 12A<\/strong><\/td><\/tr>
1<\/td>1<\/td><\/tr>
2<\/td>2<\/td><\/tr>
4<\/td>3<\/td><\/tr>
8<\/td>4<\/td><\/tr>
13<\/td>5<\/td><\/tr>
14<\/td>6<\/td><\/tr>
18<\/td>12<\/td><\/tr>
21<\/td>15<\/td><\/tr>
23<\/td>16<\/td><\/tr>
24<\/td>23<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Want to see the problems?<\/strong> The 2025 AMC 10A and 12A problems will be available on the ZIML site along with previous exams. Click here for AMC 10<\/a> and here for AMC 12<\/a>.<\/p>\n\n\n\n

Starting to prep for the AIME?<\/strong> 8 Week Preparation Courses start soon! Click here for more details and registration<\/a>.<\/p>\n\n\n\n

The AMC 10 and 12 exams are administered by the Mathematical Association of America (MAA). For general information about the AMC 10 and 12, click here<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Answers to the 2025 AMC 10A and 125 Exams held November 5, 2025 are available now. See all the answers and problem types from the exams!<\/p>\n","protected":false},"author":1,"featured_media":2772,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[87],"tags":[123,125,126,137,147,148,151,152],"yoast_head":"\n2025 AMC 10A & AMC 12A Answer Key Released - Areteem Institute Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/areteem.org\/blog\/2025-amc-10a-amc-12a-answer-key-released\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"2025 AMC 10A & AMC 12A Answer Key Released - Areteem Institute Blog\" \/>\n<meta property=\"og:description\" content=\"Answers to the 2025 AMC 10A and 125 Exams held November 5, 2025 are available now. 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