The number of paramagnetic species from the following is____________
$[Ni(CN)_4]^{2-},[Ni(CO)_4],[NiCl_4]^{2-}$
$[Fe(CN)_6]^{4},[Cu(NH_3)_4]^{2+}$
$[Fe(CN)_6]^{3-}$ and $[Fe(H_2 O)_6]^{2+}$
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