#251 Children of Quirkopia
(set on 9 December)
Solution
The answer is (b) the population is still divided 75 per cent male to 25 per cent female. This is true regardless of the make-up of individual families. To see why, imagine visiting the maternity hospital. There is a 75 per cent chance that the next baby to be born will be male. If so, then that family isn’t allowed more children, but this is irrelevant to the midwife, who is awaiting the arrival of the next baby, which is also 75 per cent likely to be a boy. Each new…
