I don't know... 1?
None because they wouldn't do it.
probally abuut 9 or so but only using 3 fingers and turning it 3 times
Three. one to hold the lightbulb and 2 toturn the ladder. trust me i tried.
1 to many.
1000 1 to screw in the lightbulb 999 make sure he doesn't get shocked.