How many questions can you get wrong on a test with150 question test?

If a test has 150 questions and you are aiming for a perfect score, you can get a maximum of 0 questions wrong. However, if you are allowed to get some questions wrong and still pass, it depends on the passing criteria set by the test administrator. For example, if the passing score is 70%, you can get up to 45 questions wrong (150 questions * 30% incorrect = 45 questions).