Two. The light bulb you remove and the light bulb you replace it with.
Only one. But they have to sit in the dark room for a year, first, to make sure that the lightbulb is out.
You don't. The police shoot you.
10. 1 to change it and 9 to say they could have done it better.
Two! one to change the light bulb and the other to rotate the universe!
Man.
removed
Echo-location, location, location (Replace "bat" with "zubat" if you wish.)
A: Replace the nails with screws.
