Fair price of a sum-divisible-by-three bet
Two fair dice are rolled. A bet pays $10 if their sum is divisible by 3 and $0 otherwise. What is its fair price (in dollars, to two decimals)?
Show hints (2)+
- Winning sums are - but weight each by how many of the rolls produce it, not by counting sum-values.
- rolls, so ; price .
Answer
Reveal answer →Final answer
3.33 (± 0.01)
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Asked at: Timed Mental-Math & Sequences, Game-Based Aptitude