[sdiy] Zener Diodes

[cheater cheater]

I am trying to understand something about Zener diodes. The way I was
taught is that they hold the voltage across them at 3.3V no matter
what (or some other voltage depending on the diode). So then what
happens if you take two of those in series, and parallel them with
another one? What will the voltage be across the two series diodes?
What will the voltage be towards the middle junction?

Thanks