It's necessary that 1 student is selected from each state.

So number of ways 1 student can be selected from 1 state =

3.

So number of ways 1 student can be selected from each of the 3 state is

3*3*3 = 27.

3 of the 9 have now been selected and 6 remain; out of which 2 need to be selected.

This can be done in

6C2 ways.

So the answer is

27*6C2 = 405If the 5 people were to be selected for 5 different posts, then the answer would be 405*5!

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In a Normal Distribution, only the Average 'Stand Out'