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on Saturday afternoon, six friends agreed to call each other. each friend talked to every other friend once. how many phone calls were made?
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4 votes
on Saturday afternoon, six friends agreed to call each other. each friend talked to every other friend once. how many phone calls were made?

User Steve Czetty
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1 Answer

4 votes

I think I might be right but you do 6x6 which would be 36.


User Nworks
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