Math Jeopardy Answers and Questions (community wiki) [closed]

This question is just for fun, and should be community wiki, but I don't know how to set that here.

Just as on Jeopardy, give an answer as the clue. Bonus points if the answer is in the Jeopardy "style", and contains puns or hints to the intended question.

Then, in the comments, people submit answers. It is hard to avoid answers with more than one question in a mathematical context, so bonus points to the most elegant questions.

First, I will give an example of a bad question and a more elegant one to a given answer, and second, I will give an example of an answer, and a better answer written more in line with the Jeopardy style.

Bad Question: What is 3 + .14?

Better Question: What are the first 3 digits of $\pi$?

2. Ok Answer: $\frac{21}{6}$

Better Answer: This well-known sum probably adds up to $\frac{21}{6}$

Question: What is the expected value of a die roll?

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This isn't a bad idea, but I don't know if math.SE is the right forum for it. –  Zach Langley Mar 1 '12 at 19:18
@ZachLangley Could you suggest a better forum then? –  Joe Mar 1 '12 at 19:22
There may or may not exist a right forum for this, but MSE isn't it. –  Henning Makholm Mar 1 '12 at 20:36
Let me add my ever-so-popular opinion: we can tolerate an exception to the ideal question type(s) proposed in the FAQ. There is plenty of verifiable garbage on this site from users who have only stopped by long enough to ask a question. I say "why not indulge in something that brings enjoyment to our vocation/studies" (if this thread does that)? –  The Chaz 2.0 Mar 1 '12 at 23:28
@TheChaz: If we allow one, we allow infinite (the broken window theory). If you think other things are not meant to be on this site, flag them! We cannot allow non-topic things just because we might have other garbage lying around. –  Aryabhata Mar 2 '12 at 1:21

closed as not constructive by Henning Makholm, Jason DeVito, Aryabhata, Hans Lundmark, Willie Wong♦Mar 2 '12 at 8:48

As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance.If this question can be reworded to fit the rules in the help center, please edit the question.

Answer: Because the Jeopardy format is fundamentally flawed.

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What is the reason Alex Trebeck's handsome face is the only thing worth watching on Jeopardy? –  Quinn Culver Mar 1 '12 at 22:12
How is it that a computer could beat the Stormin' Mormon at Jeopardy! ?? –  The Chaz 2.0 Mar 1 '12 at 23:23

42.

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–  The Chaz 2.0 Mar 1 '12 at 23:22

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This sum probably adds up to $\frac{21}{6}$.

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What is the expected value of a die roll? –  Joe Mar 1 '12 at 19:16
What is the eventual ratio of downvotes to upvotes on this question? –  msh210 Mar 1 '12 at 23:31

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