jars and marbles again...

Hi,

Consider the problem of putting M identical marbles randomly in J jars. I
was asked the expected number of non-empty jars. Using indicator variables
I was able to calculate this expected number and the corresponding
variance.

Although this was good enough, I'd like to know if it's possible to
calculate the exact distribution of the number of non-empty jars.

Thanks,

Boi
.