Parents with two children – a son and a daughter – came to a wide river. There was no bridge there. The only way to get to the other side was to ask a fisherman if he could lend them his boat. However, the boat could carry only one adult or two children.
How does the family get to the other side and return the boat to the fisherman? How many boat trips are made?
Leave your guess in a comment below.
The answer will be reveled next week along with a new puzzle.