(d) \begin{align} & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\text{T}\,\,\text{O} \\ & \text{Total}\,\text{number}\,\text{of}\,\text{balls}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\text{=}\,\,\text{1}\,\,\,\,\text{2} \\ & \text{Number}\,\text{of}\,\text{Balls}\,\text{that}\,\text{should}\,\text{remain}\,\text{uncrossed}\,\,\,\text{=}\,\,\text{-}\,\,\,\,\,\,\text{7} \\ & \text{Number}\,\text{of}\,\text{Balls}\,\text{should}\,\text{be}\,\text{crossed}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\text{=}\,\overline{\underline{\,\text{0}\,\,\,\,\text{5}}} \\ \end{align}