None. They'll just stand in the dark talking about how good the old one was.
Only one. She stands with the bulb and the world revolves around her.
Somewhere between 0 and infinity.
Ten. (Shame this one doesn't work too well for reddit - the funniest part of this joke is the third punchline enjoying people struggle to understand what the hell you're talking about.)
A morese-quito !
None - because they would all be replaced by white actors.
A: Er two. Or maybe one. No --- on second thoughts make that two. Is that okay with you
A: So you'll never know which side he's on.
Stand up!
Seven - one to actually change the bulb and six to complain that they liked the old one better.
His old one wouldn't let him swab her poop deck.