Which of the following gives an example of a set that is closed under multiplication? Choose all that apply.

The product of an even number and an even number

The product of an odd number and an odd number

The product of a negative number and a negative number

The product of a perfect cube and a perfect cube

Question

Which of the following gives an example of a set that is closed under multiplication? Choose all that apply.


		
The product of an even number and an even number

		
The product of an odd number and an odd number

		
The product of a negative number and a negative number

		
The product of a perfect cube and a perfect cube

surryyy · Answer

my answers are a and b. is it correct?

anonymous · Answer

rational numbers are closed under multiplication

anonymous · Answer

"The product of a negative number and a negative number" produces a non-negative number

anonymous · Answer

you know whats closed and open sets means right?

surryyy · Answer

yea but im confused.

anonymous · Answer

sorry i have to go off for dinner soon...refer to this for information http://www.regentsprep.org/regents/math/algebra/an1/closure.htm

surryyy · Answer

ok ty