Let 7,72: r> r'be linear transformations such that rank (t)=3 and nullity (t2)=3. let 73:r r be a linear transformation such that t°t =t2. then rank (73) is

Let 7,72: R> R'be linear transformations such that rank (T)=3 and nullity (T2)=3. Let 73:R R be a linear transformation such that T°T =T2. then rank (73) is