Recent content by markmcdo
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Solve the Hard Riddle: What Am I?
Trees. Trees are (quite literally) books or paper. line 1: jungle gym trees 2: paper 3: long trees, short trees 4: fat trees, skinny trees 5: I hope I'm not barking up the wrong tree with this answer 7: When they try to hide behind one 8: Paper currency...- markmcdo
- Post #19
- Forum: General Discussion
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Graduate 5 Star Logic Problem (100 prisoners and a light bulb)
To clarify, strategy is two parts: days 1-100 use even/odd method and designate Counter (second repeater); days 101 till end is "regular" (post#2) strategy. They won't know who Counter is, but they'll know who it ain't (them). When the first second repeater leaves room, he resets to original...- markmcdo
- Post #83
- Forum: General Math
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Graduate 5 Star Logic Problem (100 prisoners and a light bulb)
Begin with Phlegmy's #71 post of even/odd days for (say) 100 day intervals. The first repeat prisoner will reverse the order. The SECOND repeat prisoner becomes counter and begins "regular" (post #2) strategy, starting at the next 100 day (100 is probably not optimal) interval. (There MUST be...- markmcdo
- Post #82
- Forum: General Math
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Undergrad What is the Gender Ratio in a Society with a One-Boy Policy?
I can see how all 1 and 2 child families are 50/50, but wouldn't 3+ child families have more girls? I know I'm missing something but don't know what.- markmcdo
- Post #5
- Forum: General Math