4. A space X is called separable if X has a countable dense subset. Which of the following is notcorrect: *R with the usual topology is separableR with the left ray topology is separableO Rwith the co-countable topology is separableRwith the indiscrete topology is separableR with the cofinite topology is separable

4. A space X is called separable if X has a countable dense subset. Which of the following is not correct: R with the usual topology is separable O R with the left ray topology is separable O Rwith the co-countable topology is separable Rwith the indiscrete topology is separable O R with the cofinite topology is separable

4. A space X is called separable if X has a countable dense subset. Which of the following is not correct: R with the usual topology is separable O R with the left ray topology is separable O Rwith the co-countable topology is separable Rwith the indiscrete topology is separable O R with the cofinite topology is separable

Algebra and Trigonometry (6th Edition)

6th Edition

ISBN:9780134463216

Author:Robert F. Blitzer

Publisher:Robert F. Blitzer

ChapterP: Prerequisites: Fundamental Concepts Of Algebra

Section: Chapter Questions

Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...

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