2025 AMC 10/12 B Solutions(Key is in the description)

Описание: Thanks for stopping by! Below are the Google Forms for both tests. You can submit your answers and instantly see your score, topic-by-topic analysis.

Questions or feedback?
Drop a comment or email me and I’ll get back to you.
If this helped, please like 👍 and subscribe for more contest-math practice and walkthroughs.

2025 AMC 10B Test:https://docs.google.com/forms/d/1dRHy...
2025 AMC 12B Test:https://docs.google.com/forms/d/1KTh5...

Following is my first attempt solutions so I may make another video for some if I find a better way to do that. Also I will complete the rest as soon as I can.

0:00 Problem 1 is B)17-Arithmetic
0:36 Problem 2 is D)9115-Patterns,Arithmetic
2:24 Problem 3-is D)16-Pascal-like Triangle, Patterns
7:38 Problem 4 is A)7-Bases
8:26 Problem 5-C)40 Inscribed Angle
9:50 Problem 6 is C)20-Coordinate Geometry
14:22 Problem 7 is C)3 4/7-Pythagorean Theorem
17:17 Problem 8 is C)11-Algebra with Digits
21:43 Problem 9 is C)11-System of Inequalities, Stars and Bars,
30:00 Problem 10 is is A)2-Rational Root Theorem, Synthetic Division
34:07 Problem 11 is B)3/16-Derangement,Probability
37:12 Problem 12 is C)-Areas, Polygons
40:32 Problem 13 is A)3/7-Probability
Problem 14 is C)9/28-Probability    • 2025 AMC 10/12B Complete Solutions 14-20  
Problem 15 is D)107-Telescoping Series    • 2025 AMC 10B Problem 15-Partial Fraction D...  
Problem 16 is D/24-Coloring,Counting    • 2025 AMC 10/12B Complete Solutions 14-20  
Problem 17 is B)1014-Averages,Recursive Sequences    • 2025 AMC 10/12B Complete Solutions 14-20  
Problem 18 is D)5-Telescoping Series, Ceiling Functions    • 2025 AMC 10/12B Complete Solutions 14-20  
Problem 19 is D)95-Volume of Pyramids, Similar Triangles    • 2025 AMC 10/12B Complete Solutions 14-20  
Problem 20 is A)3-Length in Circles,Radicals,30-60-90 Triangle    • 2025 AMC 10/12B Complete Solutions 14-20  
Problem 21 is C)12-Casework,Burnside’s Lemma -   • 2025 AMC 10B Problem 21,AMC 12B Problem 17...  
Problem 22 is A)3/14 -Divisibility, Modular Arithmetic    • 2025 AMC 10B Problem 22-Conditional Probab...  
Problem 23 is C)11-   • 2025 AMC 10B Problem 23,AMC 12B Problem 19...  
Problem 24 is E)1/97-Probability with States, Recursion    • 2025 AMC 10B Problem 24,AMC 12B Problem 20...  
Problem 25 is B)B -Slopes and Parity    • 2025 AMC 10B Problem 25-Slopes and Parity  

2025 AMC 2B
0:00 Problem 1 is B)17-Arithmetic
0:36 Problem 2 is D)9115-Patterns,Arithmetic
Problem 3 is D)-10-Complex Numbers    • 2025 AMC 12B Problem 3 Complex Numbers  
7:38 Problem 4 is A)7-Bases
Problem 5 is E)15-Diohantine Equations, Modular Arithmetic-   • 2025 AMC 12B Problem 5 Modular Arithmetic  
17:17 Problem 6 is C)11-Algebra with Digits
Problem 7 is C)7/8-Telescoping Series with Logarithms-   • 2025 AMC 12B Problem 7-Telescoping Series ...  
Problem 8 is C)20-Vieta’s Relations, Roots, Conjugates-   • 2025 AMC 12B Problem 8-Vieta's Relation an...  
Problem 9 is C)5-Patterns,Modular Arithmetic
40:32 Problem 10 is A)3/7-30-60-90 Triangle and Cord bashing
Problem 11 is C)9/28-Probability
Problem 12-is C)10.5 Area of Circles    • 2025 AMC12B Problem 12  
Problem 13 is D)24-Coloring,Counting
Problem 14 is B)2014-Averages,Recursive Sequences
Problem 15 is D)95-Volume of Pyramids, Similar Triangles
Problem 16 is B)- Clock Problem-Angle Sum Identity for Tangent    • 2025 AMC 12B Problem 16-Clock Problem,22.5...  
Problem 17 is C)12-Burnside’s Lemma,Casework-   • 2025 AMC 10B Problem 21,AMC 12B Problem 17...  
Problem 18 is D)7/2-Expected Value
Problem 19 is C)11-Modular Arithmetic    • 2025 AMC 10B Problem 23,AMC 12B Problem 19...  
Problem 20 is D)1/97-Probability with States, Recursion
Problem 21is C)24    • 2025 AMC 12B Problem 21-Law of Cosines and...  
Problem 22 is C)9/16-Comples Numbers
Problem 23 is E)4319-
Problem 24 is D)399-Trigonometric Equations with Logarithms
Problem 25 is E)7 Concentric Circles, Equilateral Triangle and Coordbashing    • 2025 AMC 12B Problem 25