1. ## "not in" ?

Please can anyone tell me, how to make this a "not in" or negated symbol:
$\in$

Thank you!

2. Originally Posted by mander
Please can anyone tell me, how to make this a "not in" or negated symbol:
$\in$

Thank you!
The code for $\not \in$ is $$\not \in$$

3. Thank you Mr Fantastic!!