If A + B means A is the brother of B; A - B means A is the sister of B and ...

If A is the brother of B; B is the sister of C; and C is the father of D.Ho...

If A + B means A is the mother of B; A - B means A is the brother B; A % B ...

Pointing to a photograph of a boy Suresh said, "He is the son of the o...