HMMT 2005 C1
- Combinatorics
A true-false test has ten questions. If you answer five questions "true" and five "false," your score is guaranteed to be at least four. How many answer keys are there for which this is true?
Dataset text NuminaMath olympiads. Quoted with source.
Also HMMT 2005 E2.
Solutions
No solution is on olymmath yet. Official and human solutions come first when they arrive. AI solutions come after them, with a label.
Similar problems
These problems have the most words in common with this statement.