Question

Use Common sense and reply must All members....
Q=
Mother Name. =56
Son Name =46
Duaghter Name=36
What is Father Name

Answer 1

The Father's name is 6 or six.

Thank You!!

Answer 2

Jack pointed towards a photograph and mentioned the person in it as a relation. While answering these types of questions we have to start answering from the last i.e, break the sentence into parts.

I – Father’s only son  

II – Daughter of fathers’ son

III – Mother of the daughter

Now, daughter of fathers’ son will become the granddaughter of his father. Here his represents Jack. Then, mother of that daughter means Jack’s wife.  

So, the woman in the photograph is Jack’s wife.