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Mathematics 7 Online
OpenStudy (anonymous):

give an example of a set of real numbers such that the average of any two numbers in the set is in the set, but the set is not an interval

OpenStudy (anonymous):

how about \(\{0\}\)

OpenStudy (anonymous):

but why does it say the average of any two numbers though?

OpenStudy (anonymous):

@satellite73 ?

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