HU SNG - Probability of a losing day is?

[Kalledrengen]

I was wondering if someone would be so kind to calculate what the chances of a single day being a losing day when playing Heads up SNG's.

If it is not too much trouble it would be interresting to see the below scenarios.

1. If you play 20 games pr day, what are the chances that you will end the day in negative if you are winning 55% of your games?
The same question, but now with 60% win

2. If you play 40 games pr day, what are the chances that you will end the day in negative if you are winning 55% of your games?
The same question, but now with 60% win

Buyin + rake struckture is as following:
Turbo: $11+$0,5 - $55+$2,5 ect
Regular: $10+$0,5 - $50+$2,5

I'm mostly interrested in the turbos, just listed the regulars aswell if it is an easy calculation.

Anyway if anyone knows how to make these calculations and feels like doing them, it would be much appriciated [img]/images/graemlins/smile.gif[/img]

Thanks in advace!