Dear Sir

There are roughly three million people in Wales. It may be estimated that 100 of them have no legs and another 1,000 have only one leg. The remaining 2,998,900 persons have two legs. This makes a total in Wales of 5,998,900 legs shared among all the inhabitants - and average of 1.9996 legs each. Thus, nearly everyone in Wales (99.96 per cent) has more than the average number of legs.

Yours faithfully, etc