  We analyze the interplay between the absence or presence of the nodes in the
superconducting gap along electron Fermi surfaces (FSs) in Fe-pnictides, and
2Delta/T_c along hole FSs, measured by ARPES. We solve the set of coupled gap
equations for 4-band and 5-band models of Fe-pnictides and relate the presence
of the nodes to 2\Delta/T_c being below a certain threshold. Using ARPES data
for 2\Delta/T_c, we find that optimally doped (BaK)Fe_2As_2 and Ba(FeCo)_2As_2
and likely nodeless, but iso-valent BaFe_2(AsP)_2 likely has nodes.
