won't be hard to get to 600 now.
as has been pointed out before unlike most of the company papers, the western maths allow their papers to be downloaded from their website at
http://www.westmaths.com.au/home/
unfortunately the 2024 is not up yet, but when it is we can see the proof questions are
Q2, 12d, 13b, 14b, 15b, 15c and 16c
and then it will be 599
don't know when they will put it up though
and there might be others that come before then too.
so then just 1 question more to make 600