Desculpem me, claramente não é um problema de Fermi, estou com eles na cabeça. Perdão.
On Fri, Apr 6, 2012 at 5:26 PM, Francisco Barreto <fcostabarr...@gmail.com>wrote: > > Every man in a village of 100 married couples has cheated on his wife. > Every wife in the village instantly knows when a man other than her husband > has cheated, but does not know when her own husband has. The village has a > law that does not allow for adultery. Any wife who can prove that her > husband is unfaithful must kill him that very day. The women of the village > would never disobey this law. One day, the queen of the village visits and > announces that at least one husband has been unfaithful. What happens? > > Minha resposta: > After the queen announces that at least one man has been unfaithful to > his wife, all women that weren't cheated by that man that was guaranteed to > be unfaithful will immediately know it wasn't their husbands. So, one wife > must be left and hence, she will know it can only be her husband the proved > unfaithful one. Since we know that all men in the village has been > unfaithful, a cascade of similar events will happen until no man is left > alive. And that's sad. > > Não sei se consegui provar minha intuição, e se ela está certa em primeiro > lugar. 100 viúvas sobrando ao fim, isto seria triste. > > -- > Sinceramente, > Francisco Costa D. Barreto > > -- Sinceramente, Francisco Costa D. Barreto
