List of top Logical Ability Questions on Family Tree Problems

Introducing a man, Somu said, "He is the son of the only daughter of the father of my daughter-in-law." How is Somu related to that man?

A + B means A is father of B.
A - B means A is daughter of B.
A * B means A is son of B.
A / B means A is mother of B.
A & B means A is sister of B.
A \# B means A is brother of B.
Which of the following relations shows that N and M are husband and wife, respectively?