Which among the sets is open? O [0,1) O (01/1/3,1/2,1} R\[a,b] None of the above.

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
ChapterP: Prerequisites
SectionP.2: Real Numbers
Problem 3E: Express the set of real numbers between but not including 2 and 7 as follows. (a) In set-builder...
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Which among the sets is open?
O [0,1)
O {0,..1/n,..,1/3,1/2,1}
OR\[a,b]
O None of the above.
Consider the following families of sets indexed by the set of natural numbers. Which among
these is closed?
nA_n where A_n=(0,1+1/n)
nB_n where B_n=[0,1+1/n)
Uc_n where C_n= [(2n+1)/n, 3]
None of the above
Transcribed Image Text:Which among the sets is open? O [0,1) O {0,..1/n,..,1/3,1/2,1} OR\[a,b] O None of the above. Consider the following families of sets indexed by the set of natural numbers. Which among these is closed? nA_n where A_n=(0,1+1/n) nB_n where B_n=[0,1+1/n) Uc_n where C_n= [(2n+1)/n, 3] None of the above
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