"Is it useful?"
Translation:Czy to jest przydatne?
Does this have to include "to" and przydatne? I thought "jest przydatny?" would have worked
In some context "czy jest przydatny/przydatna/przydatne" would be enough. Unfortunately duolingo does not give us much space for context.
If there is "to" in the sentence, adjective has to be neuter, so "przydatne".
"czy jest przydatny/przydatna/przydatne" should be accepted now.
yes, it is a word. It means "being a consequence of coincidence/ something that happens by chance/ someone met by accident"
It's a rarely used word.