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11 Which among the sets is open? O [0,1) {0,...,1/n,...,1/3,1/2,1} None of the above. 12 Consider the following families of se indexed by the set of natural number Which among these is closed? OR\[a,b]

11 Which among the sets is open? O [0,1) {0,...,1/n,...,1/3,1/2,1} None of the above. 12 Consider the following families of se indexed by the set of natural number Which among these is closed? OR\[a,b]

Elements Of Modern Algebra
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter2: The Integers
Section2.1: Postulates For The Integers (optional)
Problem 5TFE: True or False Label each of the following statements as either true or false. 5. Let be a set of...
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For 11 and 12. Choose the letter of the correct answer
11 Which among the sets is open? [0,1) {0,...,1/n,...,1/3,1/2,1} R\[a,b] None of the above. 12 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:11 Which among the sets is open? [0,1) {0,...,1/n,...,1/3,1/2,1} R\[a,b] None of the above. 12 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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