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A man is on a trip with a fox, a goose, and a sack of corn. He comes upon a stream which he has to cross, and finds a tiny boat which he can use for the same. The problem though, is that he can only take himself and either the fox, the goose, or the corn across at a time. It is not possible for him to leave the fox alone with the goose or the goose alone with the corn. How can he get all safely over the stream?
What is Take the goose over first and come back. Then take the fox over and bring the goose back. Now take the corn over and come back alone to get the goose. Take the goose over and the job is done!