if a set A is both open and closed then it is R(set of real numbers) how we may show it in a proper way(adsbygoogle = window.adsbygoogle || []).push({});

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# If a set A is both open and closed then it is R(set of real numbers)

**Physics Forums | Science Articles, Homework Help, Discussion**