Problem 27E
Show that the union of a countable number of countable sets is countable.
Step-by-Step Solution:
SolutionIn this question we have to prove that the union of a countable number of countable sets is countable.Step 1Let us assume that B and C are two countable sets.Then, BC is also finite and therefore countable.
Step 2 of 4
Chapter 2.5, Problem 27E is Solved
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Step 3 of 4
