depends if you are a gambler...
you need 75% or better for each exam but then over the 7 exams not all have the same number of questions, so in some exams you only need to get 5 wrong and your toast.
Consider this - the CAA set 1 or 2 questions in each exam where even the question deserves a mark if you understood what it was asking.
Now think about your ability if you just pass every exam - would you be happy knowing you lack a 1/4 - 25% of what you should know?
I'd advise you take your time, listen to your instructor, take the exams when you are ready and always aim for 100%.
Good Luck!
