The Wolf, the Goat and the Cabbage

A peasant was coming back from the market. He bought a wolf, a goat and a cabbage.
Reaching a river, he had to cross it swimming. But how should he proceed?
If he had passed first the wolf, the goat would have eaten the cabbage. If he had passed the river only the cabbage with, the wolf would have eaten the goat.
First he decide to pass the goat, than the wolf, he took it on the other side, than he came back with the goat.
He left the goat where he took it from first, took the cabbage and put it with the wolf on the other side. At last, he went and took the goat and left happy to home.
"Necessity is the mother of invention!"

Oana Sãcalus