A shepherd needs to cross a river with a wolf, a sheep, and a cabbage. His boat can only carry himself and one item at a time. If left unattended, the wolf will eat the sheep, and the sheep will eat the cabbage. How many one-way river crossings must the shepherd make in total to transport all three safely?
7
1. Take sheep across (wolf & cabbage safe). Return alone. 2. Take wolf across. Bring sheep back. 3. Take cabbage across. Return alone. 4. Take sheep across. Total one-way trips = 7.
About this riddle
Logic riddles give you a few facts and ask what must be true. List what you know, cross out what cannot be, and see what is left.
Difficulty: Medium. More like this: Logic riddles with answers or try Einstein's Logic Grid for a different kind of puzzle.
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