A farmer needs to cross a river with a wolf, a goat, and a cabbage. His boat can only carry himself and one item at a time. However, if left unattended, the wolf will eat the goat, and the goat will eat the cabbage. What is the minimum number of one-way trips the farmer must make to get everything across safely?
7
Trip 1: Take the goat across, leave it on the other side (1). Trip 2: Return alone (2). Trip 3: Take the wolf across (3). Trip 4: Return with the goat (4). Trip 5: Take the cabbage across, leave it with the wolf (5). Trip 6: Return alone (6). Trip 7: Take the goat across (7). 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: Easy. More like this: Logic riddles with answers or try Einstein's Logic Grid for a different kind of puzzle.
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