Brain Teasers & Mental Math
River crossing: a farmer must take a wolf, a goat, and a cabbage across a river. The boat holds only the farmer plus one item. Left alone, the wolf eats the goat, and the goat eats the cabbage. How does he get all three across?
Model answer
Seven moves; the goat is the constraint and must be shuttled.
1. Take the GOAT across; return alone. 2. Take the WOLF across; bring the GOAT back. 3. Take the CABBAGE across; return alone (wolf +…
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