I heard Bio was 86 this year, and I heard Physics wasn't too far behind either (apparently the tests were easy/they just randomly aligned like crap). Mathematics is usually ~78-82, if I am not mistaken (and if you're talking about 2-unit and not general). Idk about Ancient but I can guess around 85-89? I am not quite sure. You'll have to look into it or check out the raw marks thread in the HSC marks section (where kids post their raw marks that they have bought). These were all for b6, i am not quite sure about b5. Just aim high! lol