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Math · Advanced Math
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8. (a) Below is a list of subsets of real numbers. Circle all those that are open sets. ZQ (b) Below is a list of subsets of real numbers. Circle all those that are closed sets. ⓩ Q ° (-1.쾨(R) (-oe.sj Nugisj entorse. (c) Let A be the set of irrational numbers z such that -2 <z <2. (i) Does A have any limit point(s)? If so, find them. () Does A contain any isolated points? (ii) Find the closure of A.

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