For some reason I am confusing the words некоторый and the word какой-нибудь/то
For example:
1. This historical event is described in some books =
(a) это историческое событие описано в некоторых книгах
- I suppose that this implies that there are for example 10 books and the event is described in the 3 or 4 of them.
(b) это историческое событие описано в каких-нибудь книгах =
- The only thing I know here is that the event is descriped in some books but I don't have the slighest idea in how many.