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| Math Central | Quandaries & Queries |
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Question from wilson, a student: what are the countable and uncountable sets? |
Hi Wilson,
A set is countably infinite if its members can be matched, in a one to one way with the positive integers, 1, 2, 3, ...
A set is countable if it is either finite or countably infinite.
A set is uncountable if it is not countable.
I hope this helps,
Penny
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