I has a question like this before:
Read the statement shown below.
If Amelia finishes her homework, then she will go to the park.
Which of these is logically equivalent to the given statement?
If Amelia did not go to the park, then she did not finish her homework.
If Amelia did not finish her homework, then she will go to the park.
If Amelia goes to the park, then she did not finish her homework.
If Amelia finishes her homework, then she cannot go to the park.
The answer was: If Amelia did not go to the park, then she did not finish her homework.
So ~ To answer your question ~ It would be: If I pass, I studied ~ Exactly what Alffer said!