Q 27/30
Three hundred families with 2 children each were selected randomly, and the following data were recorded:
\begin{tabular}{|l|c|c|c|}
\hline
Number of girls in a family & 2 & 1 & 0 \\
\hline
Number of families & 45 & 75 & 180 \\
\hline
\end{tabular}
Out of these families, one family is selected at random. What is the probability that the selected family has no girls?