She can make 36 different selections
Explanation:Total number of selection = 2
Sample = 9
[tex]\begin{gathered} 9C2=\frac{9!}{(9-2)!2!} \\ \\ =\frac{9!}{7!2!} \\ \\ =\frac{9\times8\times7!}{7!\times2\times1} \\ \\ =\frac{9\times8}{2\times1} \\ \\ =9\times4=36 \end{gathered}[/tex]She can make 36 different selections