[Guest]

Consider a hypothetical city where the practice has arisen that every family continues to procreate until a son is produced , at which point they stop having children .

Assuming that boys and girls are born with equal probability, what is the ratio of boys to girls after 100 generations?

[bonanova]

Consider a hypothetical city where the practice has arisen that every family continues to procreate until a son is produced , at which point they stop having children .

Assuming that boys and girls are born with equal probability, what is the ratio of boys to girls after 100 generations?

1:1

[Guest]

Wouldn't it be around 1 boy to every 1 girl?

[HoustonHokie]

1:1

I think you're right. Can you show that the ratio might be different after 200 generations? I think I can.

[Guest]

Mr.G, this isn't the first time you've posted a riddle that's been posted already. If you're having trouble with how to go about performing searches, PM me and I'll give you some tips. Using multiple keywords will give you less results to sift through. In this case had you performed a search for "girl +boy +ratio" (without the quotes) you would have found this riddle among four hits.

http://brainden.com/forum/index.php?showtopic=1024