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Comment : Countable sets quiz
Comment : This quiz is designed to test your knowledge of finite, countable, and uncountable sets.
Comment : Note that we did not say at any stage that B had to be a subset of A.

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Question 1: If A is a countable set, and B is an uncountable set, then the most we can say about (A union B) is that it is

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	Empty.
	Finite.
	Countable.
	At most countable.
	Uncountable.
	Countable or Uncountable.
	Finite, countable, or uncountable.