Questions & Answers about Cada sèrie té dues repeticions.
Because cada means each or every, and in Catalan it is followed by a singular noun.
So:
- cada sèrie = each set / every set
- not cada sèries
This works like English each set, not each sets.
Because the subject is grammatically singular: cada sèrie.
Even though the idea refers to all the sets in general, Catalan treats cada + singular noun as singular, so the verb must also be singular:
- Cada sèrie té... = Each set has...
If the subject were plural, the verb would be plural:
- Les sèries tenen... = The sets have...