سؤال في الاحصائية

[ميشو الحزينة]

A box is separated by a partition which divides its volume in the ratio 3:1 . The larger portion of the box contains1000 molecules of Ne gas and the smaller contains 100 molecules of He gas.A small hole is punctured in the partition , and one waits until equilibrium is attained . Find the mean number of molecules of each type on either side of the partition.