How is M related to N ?
Statements:
1. B is the daughter of M and sister of Q.
2. N is the son of K who is B's grandfather.
Answer: D
From 2, we know that N is K's son and K is B's grandfather. Thus, N is the son of B's grandfather i.e. N is either father or uncle of B.
From 1, B is the daughter of M. So, M is either father or mother of B.
Clearly, the correct relationship between M and N cannot be deduced.