Which sets of numbers are closed under multiplication

Algebra
Tutor: None Selected Time limit: 1 Day

Which sets of numbers are closed under multiplication?

 

Choose all answers that are correct.



 
A.

whole numbers


 
B.

natural numbers


 
C.

negative integers


 
D.

integers

May 7th, 2015

A&B.................................................................................................

May 7th, 2015

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May 7th, 2015
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