Boat problem with cabbage, wolf, sheep
Once upon a time a farmer went to a market and purchased a wolf, a sheep, and a cabbage. On his way home, the farmer came to the bank of a river and rented a boat. But crossing the river by boat, the farmer could carry only himself and one of his animals or his cabbage
If left unattended together, the wolf would eat the sheep, or the sheep would eat the cabbage.
how many times did the farmer have to cross the river with the cabbage, wolf or sheep?
rewritten from wikipedia page above
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