If R is wife of A, then how is A related to V? Study the following information carefully and answer the questions given below: S is the nephew of V who is the only brother-in-law of T. T has no siblings. X is the mother of W who is the father of S. Y who has only two children, and is the spouse of X. U is the mother of R who is the grandchild of Y.

Four of the following five options share a specific common characteristic and thus form a group. Which of them does not belong to that group?

The correct option is T.

Let us analyze the family relations and derive the gender of each person step-by-step from the given information:

1. Relationships of V and T: V is the only brother-in-law of T, and T has no siblings. Since T has no siblings, T cannot have a sibling whose spouse is V. Therefore, T must be married to V's sibling. This means V is male and is the brother of T's spouse.
2. Relationships of X, Y, W, and S: X is the mother of W, so X is female. W is the father of S, so W is male and S is male (nephew). Y is the spouse of X, making Y male. Y has only two children. Since S is the nephew of V and W is the father of S, V must be W's brother. Thus, the two children of X and Y are W (male) and V (male).
3. Gender of T: Since W is V's brother and T is married to V's brother, W and T are married. Because W is male, T must be female.
4. Relationships of U, R, and A: U is the mother of R, who is the grandchild of Y. This makes U the wife of V (female), and R their daughter (female). R is married to A, which makes A male (husband of R).

Now, let us determine the gender of each person listed in the options:

• T: Female
• Y: Male
• W: Male
• V: Male
• S: Male

Four of the five options (Y, W, V, and S) are males and share the common characteristic of being male. T is female and therefore does not belong to the group.