Q62Multiple choice
There are 10 professors and 20 lecturers out of whom a committee of 2 professors and 3 lecturer is to be formed. Find : C1 C2 (a) In how many ways committee :
- (i)10C2 × 19C3 can be formed (b) In how many ways a particular :
- (ii)10C2 × 19C2 professor is included (c) In how many ways a particular :
- (iii)9C1 × 20C3 lecturer is included (d) In how many ways a particular :
- (iv)10C2 × 20C3 lecturer is excluded