HMMT November 2017 U15
- Guts
- Answer
On a chessboard, each square contains a knight with probability. What is the probability that there are two knights that can attack each other? (In chess, a knight can attack any piece which is two squares away from it in a particular direction and one square away in a perpendicular direction.)
Dataset text NuminaMath olympiads. Quoted with source.
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\frac{209}{256}
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