1, because they’re very efficient and not very funny.
Two. Two to hold a ladder and one to screw it in.
Whats that? Three you say? They can’t count that high.
Men can be Feminists, too.
How many dogs and cats does it take to screw in a lightbulb?
Just one, but you will have to wait several years for it to develop the necessary coordination and size.
How many blondes does it take to tell a “How many blondes does it take to screw in a lightbulb?” joke?
One. Such a joke could also be performed with a larger number of joke-tellers, but an ensemble is not required to deliver the joke.
As many as you can convince
None. They just beat the shit out of the room for being black.
A really obscure number you’ve probably never heard of.
It takes one.