Find Expected Spins Until Two Regions Appear
Company: SIG (Susquehanna)
Role: Data Scientist
Category: Statistics & Math
Difficulty: easy
Interview Round: Online Assessment
Overview: Find the expected spins needed to observe two distinct regions on a nonuniform spinner. The solution conditions on the first region, applies a region-specific geometric waiting time, weights by the correct probabilities, and derives the reduced expectation 75/28.
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