I have two examples:
If you do try to discuss these new beliefs with them, many of whose minds are closed to new ideas will fight hard to keep themselves convinced and even try to change your mind back as well
and
If you do try to discuss these new beliefs with them, many whose minds are closed to new ideas will fight hard to keep themselves convinced and even try to change your mind back as well.
What is the difference between "many of whose" and "many whose"? Do they have the same meaning and can they be interchangeable?