1-Let B be the set of all infinite sequences over {0, 1}. Is this set countable or not, prove it?

Q: Page 160 #12 only And Page 175 #19 only

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Q: ExeraiSE 4Let the Open set dEnse 5- YOVE metrc Space Cs,d) Hen in

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A: Ordered pair (p,q)=(r,s) imply p=r and q=s.