A Brazilian
Because he was screwing around.
A: 50. One to screw in the light bulb and the remaining 49 to guard him .
Purr-tuguese
Brazil nuts!
None. Mice can't change light-bulbs as they are mere rodents without the physical or mental ability to do so. Not to mention it's much safer for them to pilfer food in the dark.
Six. One to do it and five to smash the old bulb to splinters.
Pecan, typically.
Because his nuts were in his neck!
