Interview Query

Robinhood Data Analyst | November 2020

Company: Robinhood

Position: Data Analyst

Location: nan

Level: nan

Outcome: NA

How was the interview process? What was it like?

No

What technical questions were asked?

nan

What was one of your solutions?

The expected value doesn't change with each coin flip (since winning/losing have the same reward/loss and same probability), and starts at $30. So if p = prob of getting $100: p*(100)+ (1-p)*0 = 30. Solve for p: p = 30/100 = 0.3. You have a 30% of winning.

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