Q: How many mathematicians does it take to screw in a ight bulb?
A: None. It's left to the reader as an exercise.
A': One. He gives it to eleven blondes, thereby reducing the problem to an earlier joke.
A": In an earlier article, we wrote:
Q: How many mathematicians does it take to screw in a light bulb?
A: One. He gives it to eleven blondes, thereby reducing the problem to an earlier joke...
In earlier work, we it was shown that one mathematician
can change a light bulb.
If k mathematicians can change a light bulb, and if one more simply watches them do it, then k+1 mathematicians will have changed the light bulb.
Therefore, by induction, for all n in the positive integers, n mathematicians can change a light bulb.
A: None. It's left to the reader as an exercise.
A': One. He gives it to eleven blondes, thereby reducing the problem to an earlier joke.
A": In an earlier article, we wrote:
Q: How many mathematicians does it take to screw in a light bulb?
A: One. He gives it to eleven blondes, thereby reducing the problem to an earlier joke...
In earlier work, we it was shown that one mathematician
can change a light bulb.
If k mathematicians can change a light bulb, and if one more simply watches them do it, then k+1 mathematicians will have changed the light bulb.
Therefore, by induction, for all n in the positive integers, n mathematicians can change a light bulb.