This was my Q2 solution without use of calculator, did that whole permutations thing from S1... Had loads of long division and stuff on a separate sheet and had to work out factorials before hand so took a while (apparently you should try and do each question in about 10 mins but this probably took me 15...) Anybody get the same answer? And did anybody do it a simpler way?
ERROR MADE: I stupidly said you could go up 11 steps 2 at a time... :/ :L Which added an extra incorrect combination. Inkblots has a better method.