How to solve this question?

3. Let X1, X2, ..., Xn be did with common pdf 2x f (2; 0) =3 0 exp x 2 0 O otherwise where 0 > 0. (a) Find the MME for 0. (Work required) (b) Show that the MME you found in part (a) is consistent for 0. (Work required) (c) Find the MVUE for P (X1 > 1). (Work required)