Yep. 4u was definitely my better exam. I should have aced it. But no, I didn't get an answer for about 7 marks of questions and missed a selection in probability, so looking/hoping for about/above 90% raw in 4u, but in 3u the time was the issue. 4 unit I was finished my first time through with like half an hour left, but I didn't have anywhere near my usual 50 minutes for question 7 in 3u. Something like 30 for it. Didn't attempt that v>= blah. looked like too much for a mark. Yeah reckon I got 72-78 in 3 unit, without too many mistakes there. 4unit was easy in general. slightly obscure at times, but that's 4u eh? 3u is not supposed to do that. That probability in 6 was 4u standard for sure, I've only encountered that stuff in 4u at that difficulty. projectile wasnt too bad if you read the marks value as 4 for each section! Way too much algebra. Think about how much involved calculus, like all of question 7, more than half question 1 and 4, some of question 2, 5 and 6. But 2 marks of binomial, 3 of permutations and combinations, 2 on exponential growth and decay. Realising that a large chunk of the course is indeed calculus, it doesn't detract from the inadequate level of topics in the exam. In conclusion 4 unit was cruising compared to the 3 unit exam.