who could know? all these people claiming to be getting 99+ either are the greatest 4u students to have ever walked the earth or are horribly overconfident over not getting docked for politics/sillies.
worry about ur own mark bro, i'm sure u did fine if u sit in front row in our class...
based off stats probably 93-96 range. depends on your cohorts performance and how people performed this year in general. website won't let me post links though so just search up "hsc marks database" and click E2 math.