2025AIME2 P15--Parametric Minimum at Two Points: Quartic-over-x Expression
2025AIME2 P14--Equal-Distance Configuration in a Right Triangle: Area = (n\sqrt{3})
2025AIME2 P13--Equal-Distance Configuration in a Right Triangle: Area = (n\sqrt{3})
2025AIME2 P12--Rational Recurrence: (x_{k+1}=\frac{1}{3}(x_k+\frac{1}{x_k}-1)), Find (x_{2025})
2025AIME2 P11--Constrained 11-gon: Area=1, cos=12/13, Perimeter=20
2025AIME2 P10--Perfect Matchings on a Regular 24-gon
2025AIME2 P9--No-Adjacent Seating: Choose 8 of 16 Chairs (mod 1000)
2025AIME2 P8--Nested Sine Zeros & Tangents: f(x)=sin(7π·sin 5x)
2025AIME2 P7--Is Greedy Coin Change Optimal? {1,10,25} on 1–1000
No longer a child, Making boys into Men.
2025AIME2 P6--Random Divisor Subset of 2025: LCM Probability
2025AIME2 P5--Two Tangent Circles & Equal Areas: Area of Inscribed Rectangle EFGH
2025AIME2 P4--84°–60°–36° Triangle + Midpoint Triangle: Arc-Length Combo
2025AIME2 P3--Log Telescoping Product: Simplify the Chain of Bases
2025AIME2 P2--Divisibility Puzzle: Sum of n with (n+2) | 3(n+3)(n²+9)
2025AIME2 P1-Six Collinear, One Off-Line: Area of △BGE (Geometry/Coordinates)
2019AMC12A P25 SOL2--Angle Iteration Map & Invariant Linearization
2019AMC12A P25 SOL1--Iterative Geometry
2019AMC12A P24--Factorials/Valuation
2019AMC12A P23 SOL2--Log Transform & Closed-Form Recurrence
2019AMC12A P23 SOL1--Strange Operation/Logs
2019AMC12A P22--Invariant/Monovariant
2019AMC12A P21 SOL2--Root Pairing & Modulus-Conjugate
2019AMC12A P21 SOL1--Complex/Roots of Unity
2019AMC12A P20--Triangle Lengths
2019AMC12A P19--Lattice Paths
2019AMC12A P18--Complex Fractions
2019AMC12A P17--Vectors/Analytic Geo
2019AMC12A P16--Number Theory Build
2019AMC12A P15--Quadratic Vertex
2019AMC12A P14--Combinatorics
2019AMC12A P13--System Tricks
2019AMC12A P12--Circles/Power
2019 AMC12A P11--Inequalities
2019 AMC12A P10--Probability/Counting
2019 AMC12A P9--Function & Equation
2019 AMC12A P7--Divisibility/Residue
2019 AMC12A P6--Series & Telescoping
2019 AMC12A P5--Means/Weighted Average
2019 AMC12A P4--Quadratic Basics
2019 AMC12A P3--Geometry Similarity
2019 AMC12A P2--Ratio & Fraction Simplify
2019 AMC12A P1--Quick Algebra Check
2019 AMC12B P25 SOL2
2019 AMC12B P25 SOL1--Max Area Quadrilateral Given Centroids
2019 AMC12B P24--Coordinate & Vector Geometry Problem
2019 AMC12B P23 SOL2
2019 AMC12B P23 SOL1--Convex Quadrilateral and Area Bound
2019 AMC12B P22 SOL2
2019 AMC12B P22 SOL1--Maximum Quadrilateral Area with Constraints
2019 AMC12B P21--Convex Quadrilateral & Centroid
2019 AMC12B P20--Tangents and Circle Geometry
2019 AMC12B P19--Count Binary Sequences with Const
2019 AMC12B P18--Quadratics Where Roots = Coefficients
2019 AMC12B P17--Recursive Sequence Interval Estimation
2019 AMC12B P16--Complex Numbers & Equilateral Triangle
2019 AMC12B P15-- Frog Jumping Probability
2019 AMC12B P14--Area Between Circle and Semicircles
2019 AMC12B P13--Products of Distinct Divisors
2019 AMC12B P12--Probability with Colored Balls
2019 AMC12B P11--Isosceles Triangle and Equal Perimeter Conditions
2019 AMC 12B P10--Unordered Pairs of Edges in a Cube
2019 AMC 12B P9--Counting Paths in a Graph
2019 AMC 12B P8-- Counting Integer-Sided Triangles
2019 AMC 12B P6--Points Satisfying Perimeter & Area Conditions
2019 AMC 12B P5--Locus and Equidistance Conditions
2019 AMC 12B P4--Sum of Digits via Algebraic Equation
2019 AMC 12B P3--Rigid Transformations on the Coordinate Plane
2019 AMC 12B P2--Counterexample in Logic
2019 AMC 12B P1--Volume Ratio Basics
2018 F=ma EXAM A P25--Combining Independent Measurements
2018 F=ma EXAM A P24--Rigid Rod + Mass: Axis Pivot Oscillation
2018 F=ma EXAM A P23--Angular Acceleration on Sloped Ramp
2018 F=ma EXAM A P22--Leak Rate vs Time in Sinking Boat
2018 F=ma EXAM A P21--Rolling Ping-Pong Ball: Slip to Roll Transition
2018 F=ma EXAM A P20-Energy Storage in Cut vs Whole Spring
2018 F=ma EXAM A P19--Rain Pressure Changes: Density, Radius, Speed
2018 F=ma EXAM A P18--Tension Difference in Vertical Circular Motion
2018 F=ma EXAM A P17-- Shape of Sand Stream after Helicopter Turn
2018 F=ma EXAM A P16--Coriolis Effect in Rotating Space Station
2018 F=MA EXAM A P15-- Kinetic Energy Increase in Circular Orbit
2018 F=MA EXAM A P14--Oscillation Periods in Tri-Rod Pendulu
2018 F=MA EXAM A P13--Young’s Modulus via Tightrope Tension
2018 F=MA EXAM A P12-- Uncertainty in Pendulum Experiment
2018 F=MA EXAM A P11-- Half-Spring Frequency Doubling
2018 F=MA EXAM A P10--Acceleration vs Time with Air Drag
2018 F=MA EXAM A P9--Forces on a Rod Being Lifted by a Rope
2018 F=ma EXAM B P8--Rolling Disk within a Hoop: Instantaneous Speed
2018 F=ma EXAM B P7--Minimum Time for a to–b Maneuver with Braking
2018 F=ma EXAM B P6--Crate Rolling Up a Ramp with Friction
2018 F=ma EXAM B P5--Inclined Plane & Pulley Momentum Puzzle
2018 F=ma EXAM A P4--
Optimal Impulse Application in Orbit
2018 F=ma EXAM B P3--Optimal Impulse Application in Orbit
2018 F=ma EXAM B P2--Conservation Exceptions in Collision
2018 F=ma EXAM A P1--Velocity Graph with Air Resistance
2024AMC 12B P25--Symmetry of Rational Functions
2024AMC 12B P24--Exploring the Disphenoid Mystery
2024AMC 12B P23 SOL2--Elegant Identities in Action
2024AMC 12B P23 SOL1--Trig Products Made Easy
2024AMC 12B P22 SOL2--Counting Loops with Logic
2024AMC 12B P22 SOL1--The Toothpick Puzzle Explained
2024AMC 12B P21 SOL2--Sum of Squares the Smart Way
2024AMC 12B P21 SOL1--Mastering the Recurrence Trick
2024AMC 12B P20--Triangle Probability: Area Less Than Half?
2024AMC 12B P19--Cyclic Quadrilateral: What’s the Shortest Diagonal?
2024AMC 12B P18--Stacking Cards: When Will a Vertex Land on B?
2024AMC 12B P17--System of Three: What’s the Value of ab + bc + ca?
2024AMC 12B P16-- ProToken Distribution: What’s the Probability for Each Player?
2024AMC 12B P15--Cubic Roots Product: A Surprising Value!
2024AMC 12B P14--Arithmetic Grid: Can You Fill in the Missing Number?
2024AMC 12B P13--Graph Symmetry: Where Is the Reflected Point?
2024AMC 12B P12--Geometric Sequence: What’s the Smallest Possible b?
2024AMC 12B P11--Base Trick: For Which b Is 2024\_b Divisible by 16?
2024AMC 12B P10--Triangle Angles in Radians: Connecting α and β
2024AMC 12B P9--Double Perfect Square Riddle: What’s the Unit Digit?
2024AMC 12B P8--Logarithm Equation: How Many Angles Can You Find?