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A family consist of 6 members P,Q,R,X,Y,Z

A family consists of 6 members P, Q , R, X, Y, Z. Q is the son of R but R is not mother of Q. P and R are married couple. Y is the brother of R, X is the daughter of P. Z is the brother of P. How many female members are there in the family?
A. 1
B. 2
C. 3
D. 4



Answer 
1. Q is son of R. draw this one with thick line in different horizontal rows. Both are male so take as’+’.
2. Use <=> between P and R in same row, because they are couple.
3. Add Y to R with dotted line in same row.
4. Add X to P with thick line downwards to different row. Here, X is ‘–‘.
5. Add Z to P and take Z as ‘+’.
6. So, Q and X are brother & sister.
Two female members are there with ‘-‘ symbols i.e. P and X.