Question: (b) Use induction to show that if A1, . . ., Am are disjoint countably infinite sets then A1 UA2 U...UAm is countable

(b) Use induction to show that if A1, . . ., Am
(b) Use induction to show that if A1, . . ., Am are disjoint countably infinite sets then A1 UA2 U...UAm is countable

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