Mathematics · Probability and Markov Chains
Five people stand at the vertices of a regular pentagon, throwing frisbees to each other. They have two frisbees, initially at adjacent vertices. In each time step, each frisbee is thrown independently to the left or right vertex with equal probability (1/2). The process ends as soon as one person is the target of two frisbees simultaneously. What are the mean and variance of the number of pairs of throws?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 118 and 80
- 224 and 200
- 36 and 50
- 412 and 100✓
Correct answer
12 and 100
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