Math, asked by abhishekkumarraj59, 1 month ago

A and B are countable sets. Then:​

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Answered by divya93786
0

Answer:

If A and B are countable sets, then A ∪ B is a countable set. Proof. If A and B are both finite, then so is A ∪ B, and any finite set is countable. Suppose A is finite and B is countably infinite

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