Five. It's a huge problem.
FIND OUT NEXT TIME ON DRAGONBALL ZEEEEE! (I really hope this isn't a repost)
100, 1 to screw it in and 99 to say how they could do it better.
3: One holds the light bulb, and the other two spin the Chair.
Zero. You can't fit a hairless ten-year-old inside a light bulb.