Let probability that it's ginger ale be P(G)
Let probability that it's anything but ginger ale be P(nG)
From laws of probability, in the sample space, P(G) + P(nG) = 1
therefore, P(nG) = 1 - P(G)
[tex]\begin{gathered} \text{where P(G) = }\frac{12}{66}=\frac{2}{11} \\ \text{Therefore, P(nG) = 1-}\frac{2}{11}=\frac{9}{11} \end{gathered}[/tex]