A committee of 12 students has to be selected from 18 students 6 from each management, sales & finance such that at least 2 student must be selected from each management, sales & finance and number of students from management is more than the number of students from sales which in turn is more than the number of students from finance. In how many ways this selection can be achieved

(Q). A committee of 12 students has to be selected from 18 students 6 from each management, sales & finance such that at least 2 student must be selected from each management, sales & finance and number of students from management is more than the number of students from sales which in turn is more than the number of students from finance. In how many ways this selection can be achieved?
Solution:-

Hence total number of ways is 1800 + 225 = 2025 ways      Answer