Teenager A: I found an interesting relation between my age and the age of my father. Multiplying my age by the age of my father I get the same result if we use the correct ages or if both of us reverse the ages' digits prior to the multiplication.
Same happens if I do it with my grandfather's or even with my aged grand-grand father's ages.
B, A's brother: That applies to my age as well.
C, a friend: My age, too. But no grand-grandfather...
All the ages (A,B,C) are distinct.
What are they?

(In reply to re(2): computer exploration--I'm only getting two by Ady TZIDON)

Ady,
How might you rephrase that? I mean in the context of the problem text body?

My reason for asking is that you are still able to edit the problem.  Just don't post a solution beforehand. 

If a solution is posted only levik can make the edit (see my email).

Posted by brianjn on 2011-11-21 00:28:21