\(\frac{m}{12}\)
\(\frac{12}{m}\)
\(\frac{12}{m+12}\)
\(\frac{12}{m-12}\)
Correct answer is C
Prob. (a girl) \(=\frac{Number\hspace{1mm} of\hspace{1mm} girls}{Number \hspace{1mm} of \hspace{1mm} boys \hspace{1mm} and \hspace{1mm} girls\hspace{1mm} in \hspace{1mm} class}\\
= \frac{12}{m+12}\)