In Relation puzzle type, mutual blood relations or other information of more than two persons are mentioned and information about any two is mentioned.
(i) In a family of six persons A, B, C, D, E and F, there are two married couples.
(ii) D is grandmother of A and mother of B.
(iii) C is wife of B and mother of F.
(iv) F is the grand daughter of E.
What is C to A ?
C is the wife of B and D is mother of B.
So, C is the grandmother of A.
So, C is the mother of A.