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Questions › DSE › DSE 2006 › Q57
2 marksMathematics › Real analysis › Topology of the real line: open, closed and compact setsHardabout 3 min

DSE 2006 Question 57: Real analysis

For the Society in which Families are closed under arbitrary intersection and finite union and a Gang is the complement of a Family: suppose we are given a Family and a Gang. Then, the set of individuals who belong to the given Family but not to the given Gang necessarily constitute

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Real analysis has come up 38 times in 5 exams since 2005.

What this question tests

This question is on Topology of the real line: open, closed and compact sets, part of Real analysis in Mathematics.

Which sets are open, closed or compact and how unions and intersections behave.

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Practise Real analysisMore on Topology of the real line: open, closed and compact sets

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Question from the DSE 2006 paper. Solutions are TestStop's own. Not affiliated with or endorsed by any examination authority.