110.Best Bid on Two Dice
★★★expected valueJane Street
A fair six-sided die and a fair ten-sided die are rolled. Before seeing them you must name a number; if it equals the total you are paid that many dollars, otherwise nothing. Which number should you name?
Sign in to submit an answer and track it toward your stats.
Sign inHint
You are maximising the bid times its probability, not the probability alone. The most likely total is not the most valuable one.
Want timed drills, mental math, and a market-making game too? Try the full practice suite →