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theflash077
13.01.2020 •
Mathematics
Suppose u={,-2,-1,0,1,2,} is the universal set and r={,-1,1,}. what is r'?
a.{-2,0,2}
b.{,-2,0,2,}
c.{,-2,2,}
d.{-4,-2,2,4}
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