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Mathematics 21 Online
OpenStudy (anonymous):

Which of the following gives an example of a set that is closed under multiplication? Choose all that apply. A.The product of a perfect cube and a cube B.The product of zero and zero C.The product of a whole number and a whole number D.The product of the perfect square and a perfect square

OpenStudy (unklerhaukus):

What are the necessary conditions for a set to be closed?

OpenStudy (anonymous):

I know as a fact that B and C are correct because whole number times a whole number is correct than 0 times 0 is but i do not know about a and d so, please help which of the following are correct.

OpenStudy (anonymous):

I really need an answer for this question with in a few mins.

OpenStudy (anonymous):

???

OpenStudy (anonymous):

HELP PLEASE

OpenStudy (wolfe8):

Do you know if perfect squares are whole numbers? We know for sure that cubes aren't necessarily whole numbers, like 0.001 which is 0.1 cube.

OpenStudy (anonymous):

So the answer is B C D

OpenStudy (anonymous):

or is it B and C

OpenStudy (wolfe8):

Again, do perfect cubes have to be whole numbers? What is the definition of a perfect cube?

OpenStudy (anonymous):

Perfect square is power 2 and cube id power 3

OpenStudy (happinessbreaksbones):

@.sam. @ganeshie8 @thomaster @wio

OpenStudy (wolfe8):

Here's an advice. This guy doesn't respect people and the help they give(in chat). I would not help this guy any further if I were you. He has no intention of proper learning.

Directrix (directrix):

@wolfe8 It is appalling to read ModMathmetics' crude and rude posts in the Math Chat. We very much need a backup "floating Mod" to serve when there is no official Mod "live" on this site.

OpenStudy (wolfe8):

Yeah that's true.

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