How  many  complexes among  the  following  are  paramagnetic

${\left[Mn{\left(CN\right)}_6\right]}^{3-} , {\left[Cr{\left(H_{2}O\right)}_6\right]}^{3+} , {\left[Co{\left(en\right)}_3\right]}^{3+} , \left[V{\left(CO\right)}_6\right] , {\left[Ni{\left(N{H}_3\right)}_6\right]}^{2+} , \left[Ni{\left(dmg\right)}_2\right]$

$\left[Pt{\left(Cl\right)}_2{\left(N{H}_3\right)}_2\right] , {\left[Cu{\left(N{H}_3\right)}_4\right]}^{2+} , {\left[Cu{\left(CN\right)}_4\right]}^{3-}$