Three dots, exactly one shared edge
Three dots are placed independently and uniformly at random on the perimeter of a square. What is the probability that exactly two of the dots lie on the same edge, with the third on a different edge? Give a decimal.
Show hints (2)+
- Only the edge each dot lands on matters - 4 equally likely edges per dot, so outcomes.
- Pick the sharing pair (3 ways), its edge (4), and the lone dot's edge (3).
Answer
Reveal answer →Final answer
0.5625 (± 0.005)
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