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#1 2009-11-12 23:27:14
- Identity
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- Registered: 2007-04-18
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couples at a party
I invite 10 couples to a party at my house. I ask everyone present, including my wife, how many people they shook hands with. It turns out that everyone questioned-I didn't question myself, of course-shook hands with a different number of people. If we assume that no one shook hands with his or her partner, how many people did my wife shake hands with? (I did not ask myself any questions.)
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#2 2009-11-13 02:34:07
- mathsyperson
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Re: couples at a party
Why did the vector cross the road?
It wanted to be normal.
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#3 2009-11-13 17:55:56
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Re: couples at a party
nice solution mathsy 
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