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 :
A family of two generations consisting of 6 members
From the given information:
– U is P’s daughter
– Q is R’s mother-in-law
– T is an unmarried male
– S is a male
– There are two married couples in the family
Analysis:
1. Since Q is R’s mother-in-law, R must be married to one of Q’s children
2. We know T is unmarried and S is male
3. With two married couples and T being unmarried, S must be married
4. Since R is married to Q’s child and S is married, R must be S’s wife
Conclusion:
Therefore, R is S’s wife.
