1) C_{n+1}^{m+1} : C_{n+1}^{m} : C_{n+1}^{m-1} = 5:5:3 2) \frac{C_{x}^{y}+1}{9} = \frac{C_{2}^{y+1}}{5} = \frac{C_{x}^{y-1}}{2}