question_answer

L, M, N, P, Q and R are six members of a family. L is the father of M but M is not his son. N is sibling of M. P is N's brother-in-law. Q is R's grandson. R is N's mother.

How many male members are there in a family?

A)  3                            

B)         2

C)  4                            

D)         Either [a] or [c] above  

Correct Answer: D

Solution :

Here, the sex of N is not known. N can be male or female.