# Blood relation problem - how is G related to S? [closed]

A is the son of P and brother in law of T, who is the sister of G. B is the husband of K. K has only two children, T is one of them. S is the mother of A and sister of W who is the husband of R. U is the brother of P.

If V is the brother of A, then who is the aunt of V? It would be great if someone helps me to figure this out with the help of a family tree. It would be much easier for me to interpret.

One more follow up question to this is, how is G related to S?

• "brother-in-law" may refer to two possible relations, and the rest of the clues don't disambiguate which. Relevant XKCD Apr 23 at 1:17

I worked out this family tree based on the given information. It uses standard notation. I assumed that only male-female marriages occurred because (based on chat history) this seems to be the kind of test which would assume that.

Based on this tree,

R

is V's only aunt, and G is S's

daughter-in-law. (Equivalently, S is G's mother-in-law)

There is some ambiguity here but I would say the answer is

R

Focus on this line

"S is the mother of A and sister of W".
We subsequently discover that W is male so is the uncle of A, hence his wife (R) is the aunt of A and also V since they are siblings.

What is assumed

R is female - of course R could be male and thus be another uncle in which case the aunt remains unknown from the information given.

V is the brother of A. S is the mother of A and sister of W, who is the husband of R, so R is aunt of V.

• How is G related to S? Can you help me in this by drawing a family tree? Apr 22 at 16:10
• I figured upto T as the daughter in law. Ok? But G is the sister of T. So how do I relate now? Apr 22 at 16:13
• How daughter in law? T is daughter in law right. G's gender is even not known. How do we conclude. Also she is the brother/sister of daughter in law. Yes or no? Apr 23 at 16:33