Trivia

Subject:
Re: Friday Puzzler -- Prisoner Puzzle

Henry Higginbotham
How about, "Is my number smaller than one, and only one, of the two other numbers?"

If Yes, the third prisoner knows the total is 15. If No, then if either of the first two prisoners has a 1 or 3, he will know the total is 9. If either has a 7 or 9, he will know the total is 21.

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