- General Math
- Sequences, Series and Patterns
- Plane Geometry
- Probability, Counting and Combinatorics
Video by Art of Problem Solving's Richard Rusczyk.
- Probability, Counting and Combinatorics
Sam, Pam, Ken and Jen are exchanging gifts for the holiday. Each name is written on a slip of paper and placed in a bowl. Sam is the first to randomly select a name from the bowl. What is the...
- Coordinate Geometry
- Measurement
- Proportional Reasoning
- Coordinate Geometry
- Measurement
- Proportional Reasoning
Happy Surveyors Week! Surveyors play an essential role in construction, land development, the creation of maps, and other land-based projects. They measure property boundaries, natural land features...
- Algebraic Expressions and Equations
- Proportional Reasoning
- Solid Geometry
Melrose’s hot air balloon is a sphere of diameter 100 feet. How many cubic feet of air will Melrose’s hot air balloon hold when completely filled? Express your answer as a decimal to the nearest tenth...