Chance in busting in 1on1 SNG:s

[meHIGHyouLOW]

I know this is very simple question, but just cant remember how to calculate it right now.

The question is that if i take $525(10 50+2.5 buyins) for 1on1 sng:s and win 65% of tournaments, what is the chance that i get busted before i win $1575(30buyins), and what if i start with 20 buyins, and how do i count this?

Thanks

[The4Aces]

I dont really want to do the math right now, but i am guessing somewhere around a 25-35% chance. Maybe lower or a little higher. with you loseing 35% of the games you could have a big streak and and lose 10 in a row or lose 4 win a few lose some win less.