Let R (the set of real numbers) be equipped with the Euclidean topology, then A, a finite subset of R, is: * O open but not closed in R O None of the choices O closed but not open in R neither open nor closed in R O O O O

Let R (the set of real numbers) be equipped with the Euclidean topology, then A, a finite subset of R, is: * O open but not closed in R O None of the choices O closed but not open in R neither open nor closed in R O O O O

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Question

Let R (the set of real numbers) be equipped with the Euclidean topology, then A,
a finite subset of R, is:
O open but not closed inR
O None of the choices
) closed but not open inR
Oneither open nor closed in R
O O O O

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