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Comment : Measurable subsets of R quiz
Comment : This quiz is designed to test your knowledge of the sigma-algebra of Lebesgue measurable sets of R and related concepts.
Comment : All sets are subsets of the real line R unless otherwise indicated.

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Question 1: If E is the union of a Borel set and a null set, the best one can say about E is that it is

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	A Borel set.
	A null set.
	A Lebesgue measurable set.
	A G_delta set.
	A F_sigma set.
	An arbitrary set.
	A dense set.