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标题: [讨论]A puzzle [查看完整版帖子] [打印本页]

时间: 2004-12-6 12:25

作者: 往事不用再提 标题: [讨论]A puzzle

Three jealous men take their wives out for a trip.No one wanted to leave his wife either of the other two men.Now they have to cross a river in a boat which can only take two people at a time. The men are extremely jealous and no woman will have a chance to stay together with any other man without her husband being present.How do they cross the river?

[What's your idea?Please give it.The one who first post the idea will be paid $500 in c114 currency ]

时间: 2004-12-6 12:43

作者: 2.99G

?,one husband with his wife can both take the boat at the same time, there's no problem at all！

时间: 2004-12-6 18:14

作者: enuoCM

Ah and Aw,Bh and Bw,Ch and Cw are three couples.

first,Aw and Bw crossed the river. Aw came back .(Ah,Bh,Ch,Cw-----Aw,Bw----
second,Cw and Aw crossed the river. Cw came back.
third,Ah and Bh crossed the river. Bw came back .
fourth,Bw and Cw crossed the river. Cw came back .
finaly,Ch and Cw crossed the river.

h--husband
w--wife

时间: 2004-12-7 12:03

作者: 往事不用再提

以下是引用enuoCM在2004-12-6 18:14:00的发言：
Ah and Aw,Bh and Bw,Ch and Cw are three couples.

first,Aw and Bw crossed the river. Aw came back .(Ah,Bh,Ch,Cw-----Aw,Bw----
second,Cw and Aw crossed the river. Cw came back.
third,Ah and Bh crossed the river. Bw came back .
fourth,Bw and Cw crossed the river. Cw came back .
finaly,Ch and Cw crossed the river. 
h--husband
w--wife

In third step,when Bw comes back,she'll have a chance to stay with Ch without her husband being present.
In fourth step,Cw may stay with Ah and Bh without Ch being present.

时间: 2004-12-7 13:54

作者: bluesnan

Oh,a logical test. I will leave the chance to the others.
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(though I don't have any ideas about it

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时间: 2004-12-8 12:18

作者: 往事不用再提

Key: A crosses the river with his wife first and he returns alone.Then B's and C's wives cross together. Then A's wife comes back,B and C cross over and B returns with his wife. A and B then cross and C's wife returns. Now A's and B's wives cross the river again. Finally C comes back to fetch his wife.

时间: 2004-12-8 14:50

作者: 2.99G

OH，someone must drive the boat back! How silly i was

[此贴子已经被作者于2004-12-9 10:44:35编辑过]

时间: 2004-12-8 16:23

作者: 西毒--呼啸山人

It sounds like an another story;3 big tigers with 3 small tigers,but unfortunately I forgot the answer.

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