Problem of the Day
A new programming or logic puzzle every Mon-Fri

Crossing The River

Two brothers come to a river. There is a boat, however, it can only carry one of them. How do they each get to the other side of the river using the boat assuming neither of them know how to swim?

Permalink: http://problemotd.com/problem/crossing-the-river/

Comments:

  • Anonymous - 1 year, 1 month ago

    One guy on each side of the boat (in the water), holding on. They use their other arm as to paddle.

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  • Max Burstein - 1 year ago

    Not quite as that would count as 2 people

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  • Daniel - 1 year ago

    They could tie the boat to the side of the river they are on and once one brother gets to the other side, the other can pull the boat back using the rope. Then he can get to the other side as well.

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  • optional - 1 year ago

    One brother uses the boat to go to side B; he will either use the boat back to side A or he will find someone else to get the boat back to side A. The 2nd brother will then be able to go to side B.

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  • jlube - 1 year ago

    Do we assume they come to the river on the same side? If not, then we one brother crosses to other other side, then the other brother gets into the boat and crosses too. Do they need to remain on the other side of the river? If not, then one brother crosses and returns, then the other brother crosses. Both brother will have gone to the other side.

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  • Anonymous - 1 year ago

    not quite a logical puzzle as the solution hinges on assumptions outside of the text or clever tricks of language.

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  • vijayasundaram - 12 months ago

    they use the rope to the boat with the help of the rope when one person reached other end a man in the opposite side pull the boat and again row the boat to reach the other end

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  • Daniel - 12 months ago

    Brother 1 crosses the river, moves the boat upstream, brother 2 is awaiting to catch the boat at a narrower section of the river as brother 1 lets the boat float back down the river. Brother 2 crosses the river.

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  • Ewelina - 11 months, 2 weeks ago

    Brother 1 crosses the river in a boat and holds a hand of brother 2. (Brother 2 is in the water and doesn't touch the boat)

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  • D5 - 11 months, 2 weeks ago

    They can use the bridge for across the river

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  • Anonymous - 7 months ago

    There's no mention of them being on the same side of the river. So the brother on the side of the river with the boat goes across, then the other brother gets in the boat and goes to the other side. Both brothers have crossed the river to the other side from where they started.

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  • <a href="">MBA Assignment Writing Help </a> - 5 months, 3 weeks ago

    First, Brother will come to side A and from side A brother B will go to side B. You never mentioned both brothers are on the same side.

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  • Mike Fry - 3 months, 2 weeks ago

    The first brother gets in the boat and floats to the other side where the second brother is, and the second brother then used the boat to cross to the other side.

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