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Harper Woods——Studied at the University of Oxford, Lives in Oxford, UK.
An easy proof that rational numbers are countable. A set is countable if you can count its elements. Of course if the set is finite, you can easily count its elements. If the set is infinite, being countable means that you are able to put the elements of the set in order just like natural numbers are in order.read more >>+119962023-06-14 22:31:54
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