probabilty

Posted by madhur1987 on Jun 01, 2013; 10:55am
URL: http://discussion-forum.276.s1.nabble.com/probabilty-tp7581620.html

in many countries around the world couple look to a son to take care of them in their old age. they are inclined to keep having children until they have son.for this problem imagine that govt considers permitting a couple to continue having children until they have a son.assume that birth of amale is a likely as the birth of female a)what is the prob that family would have two children( oldest a girl then a boy) b)what would be the avg no of children per family?