I don't care whether I can pass this exam, because I think this exan itself is a precious opportunity to improve myself.
i don't care about whether can i pass this exam,because i think it is a chance for me to pratice.
I don't care if I can pass this test,because in my mind ,this test itself is a valuable chance for me to practise.
The exam is a good opportunity for me to practice and I never care if pass or not