Which set is closed under the operation multiplication?

A.
{1, 2, 3}

B.
{0, 1}

C.
{0, 1, 2}

D.
{1, 2}

Question

Which set is closed under the operation multiplication?	
 
 A.
{1, 2, 3}
 
 B.
{0, 1}
 
 C.
{0, 1, 2}
 
 D.
{1, 2}

anonymous · Answer

A set is closed under multiplication if you take any two members of the set and multiply them, the product will be in the set. You can even take a member and multiply it by itself.

So, {2,4} is not closed under multiplication because 2 x 4 = 8, and 8 is not inside that set {2,4}.

anonymous · Answer

if I understood that correctly
 then after looking at the answers provided
 I don't see one that fit's
what you said

anonymous · Answer

@Easyaspi314  are you there?

anonymous · Answer

yes

anonymous · Answer

Oh no? what about choice B, {0,1}?

anonymous · Answer

this is my last question and it's the most important

anonymous · Answer

0 x 0 = 0
0 x 1 = 0
1 x 1 = 1
0 x 0 = 0

anonymous · Answer

Post any new question you may have as a new post.

You're welcome.

anonymous · Answer

I thaught you said the number hase to be outside of the set...
and
thank you

anonymous · Answer

rad again what I said.

anonymous · Answer

yeah I understand now..

anonymous · Answer

true