Market Making Card Game Interview Questions
Market making card game interview questions for quoting deck-state markets, card draw probabilities, and revealed-card updates.
Candidates practicing card-based market-making prompts.
Deck state controls fair value
Card markets depend on what remains in the deck. Always state whether cards are drawn with or without replacement.
Count before quoting
Count favorable cards and total remaining cards, then convert the probability or expected payoff into fair value.
Concrete example
If a fresh deck contract pays 100 for drawing an ace, fair value is about 100 x 4/52 before spread.
Update after reveals
A revealed non-ace changes both numerator and denominator. The next quote should use the updated deck state.
Inventory still matters
Even with a clean card probability, your quote can skew if you are already long or short that event.
Common mistakes
Candidates often forget to remove revealed cards from the deck before requoting.
Practice the pattern
Use the LeetQuidity curriculum and calibration to turn this topic into a focused practice plan.