Just one... But it takes 4 episodes and Krillin dies...
Quatro cinqo.
5. 1 to screw in the light bulb, and 4 to remark on how grand the old one was.
One to screw in the lightbulb, stock four carts of supplies, and handle seventeen simultaneous customers at any one time for five consecutive hours.
Well, first off, it's called a lamp...
Three. One to administer the anaesthetic one to extract the light bulb and one to offer the socket some vile pink mouthwash.
Three. One to change it while the other two argue about how old the old one is.
Overdue
Because red shirts die easily.
Just one, but it takes 5 episodes.
Just one, but it will take 4 episodes.
Only one, but it take 4 episodes and Krilin died at the end.
One. But it'll take 3 episodes, and Krillin dies.