It is possible to say that, but the work is being done by "combination." You can also say "for every permutation of n" and that means something different.
Typically when you say "for every x out of 30, property(x) holds" it means something like:
"every poster on lesswrong is a human being" (or more formally, "for every poster on lesswrong, that poster is a human being." (Note, this statement is meaningful but probably evaluates to false.)
Quantification is always over a set. If you are talking about permutations, you are first making a set of all permutations of 30 things (of which there are 30 factorial), and then saying "for every permutation in this set of permutations some property holds").
edit: realized your native language might be Ukrainian: I think a similar issue exists in Ukrainian quantifier adjectives.
And then, Ukrainian too has всяк/усякий (всякий) that is different from кожен (каждый)... If I were to translate усякий into English distinctly from both "every" and "any", I would probably have to say "of all kinds", but how do you say that about one thing?! anyway, this is silly.
(а мой "исходный" язык - русский + татарский + украинский. Даже не помню, что там в татарском делается.)
This thread is for asking any questions that might seem obvious, tangential, silly or what-have-you. Don't be shy, everyone has holes in their knowledge, though the fewer and the smaller we can make them, the better.
Please be respectful of other people's admitting ignorance and don't mock them for it, as they're doing a noble thing.
To any future monthly posters of SQ threads, please remember to add the "stupid_questions" tag.