Good luck on your exam/with your exam?

English as a Second Language English Vocabulary, Grammar and Idioms
1

I heard lot of people saying Good luck for your exam or Good luck with your exam
or Good Luck on your exam , but which one is correct ?

2

I would use “with” or “in”.

3

Hi Dozy and Nikita,

For what it’s worth:
I did a little bit of sleuthing on this forum and Americans also use “on”:

Which one is the correct: Maria give to Raquel a feeedback?

(Yankee is an American speaker)