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For each of the following subsets of the real line, mark which ones are compact, meaning...

For each of the following subsets of the real line, mark which ones are compact, meaning that every open cover has a finite subcover.

[1, infinity)

(1, 3)

[1, 3]

(1, 3]

{1, 3}

Just answer the question by choosing the correct answer choices.

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