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There is no simple answer to the question because the children's genders are not <br> <br> independent events. They depend on the parents' ages and their genes.<br> <br> Unfortunately there is no readily available research into the genders of seven or more children to establish the experimental probability for <br> <br> such an outcome.<br> <br> <br> <br> However, if you assume that they are independent events then, given that the probability of a girl is <br> <br> approx 0.48, then the probability of the seventh child being <br> <br> a girl is 0.48.<br> <br> <br> <br> Have a look at my webpage; <a href="http://btb.club/space-uid-385865.html">ขายไวน์</a>