There are six children playing football, namely A, B, C, D, E and F. A and E are brothers. F is the Sister of E. C is the only son of A's Uncle. B and D are the daughters of the brother of C's father. How is D related to A?
Answer: D) Cousin
Clearly, D's father is the brother of C's father and C's father is A's Uncle. So, D's father is also A's Uncle. Thus, D is A's cousin.
There is a family of five members: K, L, M, N and O. Among them, there is one married couple. O is unmarried and is the brother of K. is the sister of O. M is the only married female and the mother of N. L and O are the only males in the group.