Posted: September 12th, 2015

In order to try to resolve a European financial crisis, the U.S. treasury secretary plans to visit London, Berlin, Madrid, Rome, Paris, Bucharest, Budapest, Warsaw, Vienna, Prague, and Brussels

In order to try to resolve a European financial crisis, the U.S. treasury secretary plans to visit London, Berlin, Madrid, Rome, Paris, Bucharest, Budapest, Warsaw, Vienna, Prague, and Brussels. In how many ways can this trip be one assuming the secretary if leaving from and returning to Washington, D.C? Explain your thinking proces