AMC 10 2021-fall-b Problem 23
- Paper
Each of the sides and the diagonals of a regular pentagon are randomly and independently colored red or blue with equal probability. What is the probability that there will be a triangle whose vertices are among the vertices of the pentagon such that all of its sides have the same color?
Dataset text NuminaMath-1.5. Quoted with source.
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\frac{253}{256}
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