Set Theory :Complements with Ellipses
posted by Ashley .
Let U= {1,2,3, . . .},
A= {1, 2, 3, . . . ., 39}.
use the roster method to write the set A'
Find A' =
_____________________________________________
I understand how complements work. Complement A' is everything outside of set A. However, since U goes on infinitely with its ellipsis, how do I know exactly what the complement of A' is?
Help, please?

simple: A' = {40,41, ...}
Respond to this Question
Similar Questions

Art... complements
Hello, My answer for the following question is #4, is that correct? 
economics
examples of substitutes for chicken and some complements and how are each of these substitutes and complements are affected? 
Math
Compare the size of 30 and 0.03. Write the set {the vowels} as a roster. Name the elements in the set {r, s, t, u, v} Find the LCM for 2, 7, 12, and 20. 
algebra
write each set in roster form and in set builder notation: N is the set of even numbers that are less than 2.5 
English Complements
The sea appearred calm in the morning. Identify the complements? 
Complements
I think I have the complements right (see what's in brackets), but I need to say whether they're predicate adjective, predicate nominative, direct or indirect objects. At first this Saturday had been a warm, sunny [day]. However, the … 
Math
Use roster notation to create and write two proper subsets of your original set. 3. Do the following and write your answers in roster notation. •Find the union of the sets. •Find the intersection of the sets. •Find the complement … 
Algebra
If n is the set of natural numbers that are factors of 16, what is the set in roster form? 
Algebra
1. Choose the correct solution in roster form. N is the set of natural numbers that are factors of 12. {1, 2, 3, 4, 6} {1, 2, 3, 4, 6, 12} {1, 2, 3, 4, 5, 6, 8, 12} *this is my answer {1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12} 2. Write the … 
Math
1. Write the set in roster form: N is the set of real numbers that are factors of 12. A. {2,4,6} B. {1,2,3,4,6} C. {1,2,3,4,6,8,12} D. {1,2,3,4,6,12}***