How to sum two hashes?

Question

Encryption

The file is split into two chunks.
MD5 hash of the file = z
Can I get the hash (z) of the file itself in their "sum" with chunk hashes?

Answer 1

merkle tree

Answer 2

You can not. Maximum - having the entire second chunk and the hash from the first, you can get the hash of the entire file.

Answer 3

Not