True !! It makes sense what you're writing.
So, to make 800 points out of 135 Q if it is not weighted...each question is worth 5.925 rounding up to 6 points per question.
I have broken down the math this way: out of 135 Q, you must answer 100 correctly if unweighted. If it is weighted than, its pure luck you may pass answering less than 100 Q (if you answer more hard weighted question right) or you may have to answer more than 100 (if you keep missing hard weighted question and answer simple question). Its just luck, I guess. But to be safe, one must answer 100 (may be a must) to be on borderline pass or fail
and there's this thin red line above or below 100th question !!