A man has to take a hen, a fox, and some corn across a river. He can only take one thing across at a time. Unless the man is present, the fox will eat the hen and the hen will eat the corn. How is it done?
first he takes the hen to the other side then goes back to take the fox when he goes back, he takes the hen back to the first side then takes the seeds and leaves the hen after that he goes back to get the hen