//Example 6.2
clear;
clc;

//To calculate the number of ways of distributing 4 between 4 energy levels so that there are 2 molecules in e1,1in e2 and 0 in e3 energy level
w=(4*3*2*1)/(2*1*1*1);//number of ways of distributing 4 between 4 energy levels so that there are 2 molecules in e1,1in e2 and 0 in e3 energy level
mprintf('number of ways of distributing 4 between 4 energy levels so that there are 2 molecules in e1,1in e2 and 0 in e3 energy level = %i',w);
//end