Q20. The value of net resistance of the network as shown in the given figure is :\\
\includegraphics[max width=\textwidth, alt={}, center]{3616d330-bac2-49a3-b4d0-f3e913f2a24d-04_369_652_1601_221}\\
(1) $6 \Omega$\\
(2) $( 5 / 2 ) \Omega$\\
(3) $( 15 / 4 ) \Omega$\\
(4) $( 30 / 11 ) \Omega$