für + Accusative or Dative?
1: Das Studium an der Viadrina ist eine Herausforderung für jeden Studenten.
2: Die Sensibilität für andere Kulturen und Denkweisen ist gefragt.
According to what I found online, für should always be followed by Akkusative, however, in the first sentence, jeden is the dative plural form.
Can anybody explain to me why it's für jeden Studenten instead of für jede Studenten?
Für is always followed by akkusative and the jeden in the first sentence is the akkusative singular form (because if you "ask" for the object (here: the student) it's "Wen?". If it was dativ you would ask with "Wem?".)
Nom. - jeder, jede, jedes
Akk. - jeden, jede, jedes
Dat. - jedem, jeder, jedem
Gen. - jedes, jeder, jedes
masculine, feminine and neuter respectively. There is no plural form because jeder is always used as singular.
That's where I found the plural form of 'jeder'. So is it incorrect?
It is very uncommon to see jede used with a plural. It is generally bad style and people don't use it, even if you can technically decline the word into a plural form.
Think of it like the English word each, it means the same as jeder and is also only used with singular nouns.
If you wanted to use the plural, you would instead say alle
"Der Student" is an example of what are called "weak N-nouns" or "weak masculine N-nouns." These are masculine German nouns (i.e., nouns that take 'der' as the definite article) that have an added -n or -en in all cases but the nominative singular. There are some tricks to help you memorize which nouns are weak N-nouns, but until you get a feel for which nouns fall into this category, you simply have to memorize them at first. 'Der Student' is one of these weak N-nouns, so its declension in the singular goes der Student / den Studenten / dem Studenten / des Studentens. You can read more about weak N-nouns here: http://germanforenglishspeakers.com/nouns/weak-nouns-the-n-declension/