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?

 

Opting for an unique solution:

 

 

Youngster 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's friend: My age, too.

 D, C's older sister:    Also to my age

E, another  A's friend: My age, too. But no grand-grandfather…

 

None of the persons is over 30.

All the ages (A,B,C,D,E) are distinct.

 

What are they?

Edited on November 21, 2011, 3:44 pm

Posted by Ady TZIDON on 2011-11-21 14:51:18