Two. But I don't know how they got in there.
They tell you.
Zero, because none of them knows how to
One, but only if the lightbulb really to change.
They don't. They just talk about when it did work.
Screw is such a harsh word, M'Lightbulb. I have too much respect for lamps to use it." Tips fedora
Just the standard two, but I'll be damned if I know how they got in there.
You can't cross a scalar and a vector.