Derek Parfit: Personal Identity

Which of the following pairs are (a) numerically identical, (b) numerically identical but only qualitative identical?
(i) The author of Essay concerning Human Understanding; John Locke.
(ii) your copy of this book; your classmate's copy of this book.
(iii) 2+3; 5
(iv) the teenager who played Harry Potter in the movies; the adult British actor Daniel Radcliffe
(v) The can of Acme soup on the left of the supermarket shelf; the can of Acme soup on the right of the self.