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Six witches and ten sorcerers are at an arcane mixer. The witches have decided to shake hands with each of the sorcerers. None of the witches bothered to shake each other's hands, since they are all good friends already, and the sorcerers all sort of hate each other and did not shake hands with other sorcerers. How many handshakes took place at the mixer?

 Mar 13, 2020
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the answer is 60.

 

 

this question is not original. 

the answer can be found on 

https://brilliant.org/problems/question-19/

 Mar 13, 2020
edited by tomsun  Mar 13, 2020

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