Zero. You can't fit a hairless ten-year-old inside a light bulb.
Two. But I don't know how they got in there.
Two, but how do they get in there?
WANNA RIDE BIKES
Irrelevant, you will be assimilated!
Ten-ants!
Depends on the size of the pieces.
There's 20 of them
Eric Clapton wouldn't drop a bag of cocaine out the window