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Are positive integers closed under subtraction? •yes •no Are rational numbers closed under multiplication? •yes •no Are negative real numbers closed under division? •yes •no Are…

Are positive integers closed under subtraction? •yes •no Are rational numbers closed under multiplication? •yes •no Are negative real numbers closed under division? •yes •no Are…
asked 72.4k views
2 votes
Are positive integers closed under subtraction?

•yes
•no

Are rational numbers closed under multiplication?
•yes
•no

Are negative real numbers closed under division?
•yes
•no

Are irrational numbers closed under addition?
•yes
•no

asked
User Laurence Billingham
by
8.1k points

2 Answers

4 votes
#1 not closed
#2 closed
#3 not closed
#4 not closed
answered
User Mohammad Hosseini
by
8.2k points
5 votes
Do you remember the answer..? I need help as well.
answered
User Nate Jenson
by
8.3k points
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