Question: 2 (10 points) Consider two infinite sets A ad B which are countable and AUB0. Show that the set AUB is countable. Note that if

2" (10 points) Consider two infinite sets A ad B which are countable and AUB0. Show that the set AUB is countable. Note that if you use picture to demonstrate correspondence and need to skip some elements, you must explain in what situation do you need to skip those element, and why

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