Read the following statements carefully:
(i) Tom, Dick and Harry are intelligent.
(ii) Tom, Brown and Jack are hard working.
(iii) Brown, Harry and Jack are honest.
(iv) Tom, Dick and Jack are ambitious.

Which of the following persons is neither hardworking nor ambitious?

Let's analyze the characteristics of each person mentioned:
1. Hardworking individuals: Tom, Brown, Jack (from statement ii)
2. Ambitious individuals: Tom, Dick, Jack (from statement iv)

We are looking for a person who is neither hardworking nor ambitious.

* Tom is both hardworking and ambitious.
* Dick is ambitious.
* Jack is both hardworking and ambitious.
* Harry is intelligent and honest (statements i and iii), but does not appear in the hardworking or ambitious lists.

Hence, Harry is neither hardworking nor ambitious.