Calculate the wave number for the shortest wavelength transition in the Balmer series of atomic hydrogen .

Question

$\begin{array}{1 1} (a)\;27419.5\;cm^{-1} \\ (b)\;17419.5\;cm^{-1} \\ (c)\;7419.5\;cm^{-1}\\(d)\;27419.5\;cm^{-1} \end{array} $