But, AV8, there are three actual exams for each subject - if you sat Paper 1 and passed, you would never know which questions were on papers 2 and 3! That is why, if you fail a subject three times, you have to have extra tuition and this has to be proved in some way to the CAA because when you resit, you will be sitting a paper you have seen before!
Cheers
Whirls