Answered

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

Answer :

PandaBear002
Do you remember the answer..? I need help as well.
#1 not closed
#2 closed
#3 not closed
#4 not closed

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