2024 AIME1 P5--Delete-to-Form Numbers: How Many Distinct 10-Digit Results?

 2024 AIME1 P3--The Factorial Mirror: Solve (n-1)(n-2)⋯(n-200)=200!

 2024 AIME1 P2--Digit-Led Sentences: Counting “a/b” Books with a Mod-3 Twist

 2024 AIME1 P1-- Coffee-Shop Checkpoint: Can Aya Make It Home in 2 Hours?

 2025 AIME1 P15--Cubes Mod 37 and Smart Case Bash

 

The Logic of the Greater Good: A 16-Year-Old’s Deep Dive into Utilitarianism and Ethics

 2025AIME P14--Minimizing Distances in a Convex Pentagon