2. How many Duos would it take to screw on a light bulb?
Light bulb... what light bulb?

3. How many Trowas would it take to screw on a light bulb?
Four: One to analyze the situation, one to do the work, one to assess the result, and the other one to try and remember what a light bulb is.

4. How many Quatres would it take to screw on a light bulb?
None: He has the Maganac team to do it for him

5. How many Wufeis would it take to screw on a light bulb?
One: He wouldn let anyone else help

6. How many Relenas would it take to screw on a light bulb?
None: She has servants to do that sort of thing