Hmm, I am not quite sure what you are trying to do. Do you want to show always 2 questions on one page (e.g. 5 pages) or do you want to randomly show 2 questions out of 10?
In the first case you will need to create a group per page (so 5 groups) in the second case you need to create 2 groups, one with 2 questions, they other one with 8 questions. The group with 8 questions you will hide via the GUI and you will give all 10 questions the same name in "randomization group". What happens is that the 10 questions are shuffled randomly through the 10 different positions. As the second group with 8 is hidden, respondents will only see 2 of those positions.
I answer at the LimeSurvey forum in my spare time, I'm not a LimeSurvey GmbH employee.
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