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| Topic | Help me understand your reasoning in solving the following easy problem |
| Sahuagin 04/05/17 9:37:57 PM #65: | the number of possibilities of having two children (or flipping two coins) is 4. the question is really: how many possiblities does the phrase "at least one of them is a girl" exclude? "at least one of them is a girl" translates into "they are not both boys" "they are not both boys" excludes exactly 1 of the 4 possibilities the chance is 1/3 people that say 1/2 are mistaking "at least one of them is a girl" to be as much information as knowing "the first child is a girl" (or "the second child is a girl"; the ambiguity is an indication of the lack of information) --- The truth basks in scrutiny. http://i.imgur.com/GMouTGs.jpg http://projecteuler.net/profile/Sahuagin.png ... Copied to Clipboard! |
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