None, they arrest the room because it's black.
Just two, but they'd have to be really small.
You will find out when the light comes on.
Everything's gonna be all white.
One. He puts the bulb in and lets the world revolve around him.
A road hog !
He was involved in a hit-and-run.
Two. One to arrest the room for being black, and the other to arrest the bulb for being broke.
A telephono lens.
answer "Scissors." then drive away..