List explicitly all the ways to arrange 2 quanta among 4 one-dimensional oscillators. How many different ways are there to get 5 heads in 10 throws of a true coin? How many different ways are there...

List explicitly all the ways to arrange 2 quanta among 4 one-dimensional oscillators.

How many different ways are there to get 5 heads in 10 throws of a true coin? How many different ways are there to get

no heads in 10 throws of a true coin?