## Encyclopedia > 431A

Article Content

# 431A

431A is the type of plug which fits a standard "type 600[?]" British Telecom telephone socket[?].

This article (or an earlier version of it) contains material from FOLDOC, used with permission. Update as needed.

All Wikipedia text is available under the terms of the GNU Free Documentation License

Search Encyclopedia
 Search over one million articles, find something about almost anything!

Featured Article
 Quadratic formula ... b/(2a) from both sides, we get $x=\frac{-b}{2a}\pm\frac{\sqrt{b^2-4ac}}{2a}=\frac{-b\pm\sqrt{b^2-4ac}}{2a}.$ Generalizations The ...