I did the whole of the first two mechanics questions (not sure if they were right or what I got, completely forgotten already) and I did the whole of the probability one with the matches and the points... I think I did the first part (ie the show that) of that wrong - basically just used a tree diagram and no series - I knew it should have been series, but I fiddled about with the probabilities of the tree diagram until I got the 'show that' result so left it.
Of the three pure questions I tried, I didn't finish any of them (and barely started one of them). Fingers crossed for low grade boundaries!