A Handful for the Farmer
A farmer was trying to cross a river in a boat which held him and two items, to be chosen from two wolves, one dog, one goat and one bag of grain. When the farmer was not around, either wolf would eat the dog or the goat, the dog would eat the goat and the goat would eat the grain. How could the farmer transport all five items across the river to his home, where he would eat them himself?
(From the May 1990 issue of Quantum.)
(From the May 1990 issue of Quantum.)