"The set of rational number is closed under division. -- TRUE OR FALSE"

I think this is false, but simply cause I read it in my text book (or mis-read it if I am wrong).

Can someone show me an example?

Many thanks! (Hi)

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- Dec 2nd 2008, 04:01 PMpleasehelpme12345"The set of rational numbers...."
"The set of rational number is closed under division. -- TRUE OR FALSE"

I think this is false, but simply cause I read it in my text book (or mis-read it if I am wrong).

Can someone show me an example?

Many thanks! (Hi) - Dec 2nd 2008, 04:10 PMPlato
- Dec 2nd 2008, 04:27 PMpleasehelpme12345
I have no clue what you just posted!

- Dec 2nd 2008, 05:48 PMPlato
- Dec 2nd 2008, 08:32 PMpleasehelpme12345
Not at all, I just don't understand the symbols. Thanks though! I got it.