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Limit Points and Continuity
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Which of the following sets is an open set in the real numbers?
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A
The set of all numbers greater than 0
💡 Explanation:
An open set in the real numbers is a set that contains an open interval around each of its points. The set of all numbers greater than 0 is an open set because for any number in the set, we can find an open interval around that number that is entirely contained in the set.