How to Judge whether I would pass CISM 06/14 ?

in CISM
How can I evaluate whether I would pass/fail ? I was
Sure right = 40 percent
Double Minded (2 options eliminated) = 40 percent
Best guess or not familiar questions = 20 percent
Sure right = 40 percent
Double Minded (2 options eliminated) = 40 percent
Best guess or not familiar questions = 20 percent