if i solve last 10 years question papers of pcmb (hsc) how much marks would i get in hsc board 2017?

@ xavier 
last 10 years papers are like the practic e thing that u have to do for sure , u cannot leave that , 
so, frst of all complete your syllabus and attempt the last 10 yrs paper , and make sure after attemption u analysed that beacuse without analysing there is no meaning of attempting the paper . 
and u can able to manage 80-83 percent by solving them , assuming that your concept is 50 percent cleared ., 

HOPE IT HELPS 
ALL THE BEST 

10 year question paper is more, and in board examination question repeats.

you need to focus on the concepts while you are solving questions, 

so you do not need to memorise it , you can easily get 80-85% marks by doing this 

good luck