Im wobbeling in the Forums a bit, most stuff I do is in Java currently.
(some small 4 kilobyte games in by signature)
But I do some trials in the engine sometimes.

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But my calculation is the chance of picking at least 1 colored ball when doing 2 draws. (without putting the ball back)
Quote:
What I want to figure out is what is if I pick 7 balls at random what is the probability that I will pick at least one of each of the non black balls?


Wich can be continued to 7 balls in this manner)
Not the chance of drawing exact 2 colored balls.

I would have to look up the Math for probability distributions
to get a more fancy answer wink
Dont rememeber that stuff on the fly.