(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Let K be a closed&bounded set in R^n which isn't empty.

Prove that K isn't open.

2. Relevant equations

No topology! I can't use the fact that the only sets in R^n which are closed and open are the empty set and R^n.... Only the definitions of open sets and closed sets (closed sets=sets which satisfy that the limit of every converged sequence is an element of the set...)

3. The attempt at a solution

I have no idea how to do it...

Hope you'll be able to help me

Thanks

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# R^n topological quesion-Calculus

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