A farmer needs to carry a wolf, a goat, and a cabbage across a river. He has a boat that can carry him and one other item at a time. If left alone, the wolf will eat the goat, and the goat will eat the cabbage. How can he carry all three across the river without anything being eaten?
Answer:
- Take the goat across the river first.
- Return alone and take the cabbage across.
- Leave the cabbage and bring the goat back.
- Take the wolf across the river.
- Return alone and finally take the goat across.