Q. A family of two generations consisting of six members P, Q, R, S, T and U has three males and three females.
There are two married couples and two unmarried siblings. U is P ‘s daughter and Q is R ‘s mother – in – law. T is an unmarried male and S is a male. Which one of the following is correct?
(a) R is U’s husband.
(b) R is S’s wife.
(c) S is unmarried.
(d) None of the above
Correct Answer: (b) R is S’s wife.
Question from UPSC Prelims 2020 CSAT Paper
Explanation :
Family of two generations
From the given information, we know that U is P’s daughter and Q is R’s mother-in-law. This means that R is married to one of Q’s children.
We also know that T is an unmarried male and S is a male. Since there are two married couples in the family and T is unmarried, S must be married.
Since R is married to one of Q’s children and S is married, it follows that R must be married to S. Therefore, (b) R is S’s wife.
