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<tex> P(A) = \genfrac{}{}{}{0}{1}{6} + \genfrac{}{}{}{0}{1}{6} \times(\genfrac{}{}{}{0}{5}{6})^{2} + \genfrac{}{}{}{0}{1}{6}\times (\genfrac{}{}{}{0}{5}{6})^{4} ... = \genfrac{}{}{}{0}{6}{11}.
P(B)= \genfrac{}{}{}{0}{1}{6} \times(\genfrac{}{}{}{0}{5}{6})+ \genfrac{}{}{}{0}{1}{6} \times(\genfrac{}{}{}{0}{5}{6})^{3} + \genfrac{}{}{}{0}{1}{6}\times (\genfrac{}{}{}{0}{5}{6})^{5} ... = \genfrac{}{}{}{0}{5}{11}.
</tex>
