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I recently saw this question, which asks to prove two (completely) different inequalities. I'm sure there are many more examples of questions which are basically two different questions in one. What should we do with this? I'm not sure what would be the best thing to do:

  • Leave the question as it is? This makes it hard to give it an informative title.
  • Put the question on hold for "asking two questions in one"?
  • Ask the OP to split up his question into two separate questions?
    And if the OP doesn't ...
    • Leave the question as it is?
    • Split up the question yourself?
    • Close it?

Related: Related questions, post as one question?

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  • $\begingroup$ IMHO, the structure of the two inequalities in your example is similar to each other. It looks like the asker there want to attack the first inequality by investigating a simpler version (the second one) for insight. This is perfectly valid. For this particular case, the two questions should stay together. $\endgroup$ – achille hui Feb 20 '15 at 9:27
  • $\begingroup$ I'd say it is pretty much a judgement call, whether the problems posted in the same question are close enough. (I.e., whether they would be better of as two separate questions or whether it is better to keep them in the same post.) So I don't think there is a general answer to this; we'll have to look at questions case-by-case. In this particular case I think it is ok. (And the title is find, too.) $\endgroup$ – Martin Sleziak Feb 20 '15 at 9:30
  • $\begingroup$ I agree that the example I gave is not that good, but if someone asks two really different questions, what should we do? $\endgroup$ – punctured dusk Feb 20 '15 at 11:39
  • $\begingroup$ If the questions are really different, then ask the asker their connection. Sometimes the hidden connection between two seemly unrelated question may shine some light on what the "real" question is. It is very common people asks question which is different from what they really want to know. If the asker cannot provide any connection, then we should suggest the asker to split it. If the asker didn't response, then do whatever you want. $\endgroup$ – achille hui Feb 20 '15 at 12:25
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    $\begingroup$ For the case of completely unrelated questions in one post see the discussion here: Posting multiple questions as one? $\endgroup$ – Martin Sleziak Feb 20 '15 at 14:08

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