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ou are on the bank of a river. You have to get a fox, a hen, and corn to the other side of the river. If left alone, the fox will eat the hen, and the hen will eat the corn if left alone. The boat is only big enough to take you and one other three to the other side.
How do you get all 3 across intact?
Answer: First take the hen across. Leave the hen. Go back and get the fox. Take the fox to the other side. Leave the fox there, but take the hen with you back to get the corn. Leave the hen and take the corn to the other side. Drop the corn off with the fox, then go back to get the hen. Bring the hen to the other side. All 3 make it fully intact!