- General Math
- Sequences, Series and Patterns
- Number Theory
Video by Art of Problem Solving's Richard Rusczyk.
- General Math
- Percents and Fractions
- Problem Solving (Misc.)
Kyra’s school building this year was overcrowded due to a lot of new registered students. Classroom space was a real issue. In looking ahead to next year, the administration figures that if teachers...
- Solid Geometry
Video by Art of Problem Solving's Richard Rusczyk.
- Percents and Fractions
- Solid Geometry
For the following problems, assume that the snowballs are perfect spheres. Chiquita and Rhonda are each building a snowman. Rhonda tells Chiquita that she is making each of her 3 balls of snow 20%...