Quantitative Research Interview Questions

3,500 quantitative research interview questions shared by candidates

You’re given two red cards and two black cards. The cards are shuffled and placed face down. You flip them over one at a time. You start with $100, and before revealing each card, you can choose how much to bet. If the card is red, you win double your bet. If it’s black, you lose the amount you bet. What’s the optimal betting strategy in this scenario? Now, suppose there’s a $20 entry fee to play the game. How does that affect your strategy?
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Quantitative Researcher

Interviewed at Da Vinci Derivatives

4.5
May 1, 2025

You’re given two red cards and two black cards. The cards are shuffled and placed face down. You flip them over one at a time. You start with $100, and before revealing each card, you can choose how much to bet. If the card is red, you win double your bet. If it’s black, you lose the amount you bet. What’s the optimal betting strategy in this scenario? Now, suppose there’s a $20 entry fee to play the game. How does that affect your strategy?

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