So, I have a question from a test I took and got a 80% on it, apparently I missed this question

For which operations is the set {0, 1} closed?

A. Multiplication
B. Division
C. Addition
D. Subtraction

I picked A but the correct answers were A and B
Why division? You can't divided 0 by 0? right?

Question

So, I have a question from a test I took and got a 80% on it, apparently I missed this question

For which operations is the set {0, 1} closed?

A. Multiplication
B. Division
C. Addition
D. Subtraction

I picked A but the correct answers were A and B
Why division? You can't divided 0 by 0? right?

greengalaxy · Answer

@whpalmer4 @paki  @Lexaaa_ganja

anonymous · Answer

well technically 0 divided by 0 is 0...

greengalaxy · Answer

But, in the lesson they specifically said you can't do that.

greengalaxy · Answer

@satellite73 @Gabriel_Morrow  @Hero

greengalaxy · Answer

@helper9000 @pooja195 
Anyone?

whpalmer4 · Answer

@mrqueest 0 / 0 is NOT 0

For all values of $a,b,c$, if 

$$a/b = c$$ then $$c*b =a$$

Does that work for $a/0=0$?
$$3/0 = 0$$means that $$0*0 = 3$$but it isn't.

greengalaxy · Answer

Oh! Wow, thank you! I wouldn't have gotten this at all! Thanks!

whpalmer4 · Answer

My guess is that division was included with the understanding that division by 0 is excluded because it gives an undefined result.

greengalaxy · Answer

I gave you a medal, also im closing this session, thanks a ton!

anonymous · Answer

yes green?

greengalaxy · Answer

It's alright  my question is already awnserd.Thanks anyways

anonymous · Answer

ok np @GreenGalaxy