Find the number of integer solutions of the equation n1+n2+n3+n4=153
with n1>=10, n2>=20, n3>=30, n4>=40
ensuring minimum 10,20,30,40 yielding sum of 100,
the new n1,n2,n3,n4 will
This can be
done in (53+4-1)C(4-1) = 56C3 =
56*55*54/6 = 56*55*9= 27720 Using Bose Einstein Statistics
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