Help with Closed Numbers

FratBro23
Category:
Mathematics
Price: $5 USD

Question description

I don't understand the whole idea with closed integers, rational numbers, irrational numbers, evens, odds, naturals, real, ect. I just need some help to figure this out. Is the set of integers closed under addition? Counterexamples? Is the set closed under subtraction? How about division? 

Tutor Answer

(Top Tutor) Daniel C.
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School: UIUC
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